Nigerians have been using the Facebook founder's visit as an opportunity to express their views on how they think the social network could improve. I asked some people here in the northern city of Bauchi what advice they'd give Mark Zuckerberg:
My problem with Facebook is that accounts are easily hacked into - someone gets control of your account and posts things that do not belong to you. I also urge Facebook to regulate pornographic posts and to set an age limit for users and come up with a means of detecting the actual age of users to prevent those underage from using the medium."
Identity theft is a big issue that Facebook should look into. Some people use multiple Facebook accounts using different names and profile pictures. In this manner, they commit crimes such as fraud and posting hate comments. I advise Facebook to use a fingerprint capture device when people intend to create new Facebook account. This will check the problem of one person using multiple accounts and address identity theft."
I enjoy using Facebook for connecting with friends but my problem with it is that it sends me unsolicited emails. Sometimes these emails make it difficult to scroll down to find important messages in my inbox and they make my inbox full so quickly."
But one person couldn't think of anything bad to say:
I really benefit from Facebook. I use it to connect with friends and loved ones. I also get the latest news through Facebook. As far as I am concerned, Facebook is OK. I welcome Mr Zuckerberg to Nigeria."
Traders close up shop in Kenya's 'Little Mogadishu'
BBC Africa, Nairobi
The usually bustling district of Eastleigh in Kenya’s capital, Nairobi, shut up shop today:
Shopkeepers complain that hawkers are affecting their business by blocking entrances and are able to undercut them because they don't pay tax.
Eastleigh – known as Little Mogadishu because of its large Somali community – is one of the biggest trading centres in East Africa and has more than 50 shopping malls.
Traders say the malls will remain closed for three days and a crisis meeting has been ongoing on between hawker representatives, those from Eastleigh’s business community and Nairobi county leaders.
Tear gas fired in Gabon's capital
A supporter of opposition candidate Jean Ping has told BBC Focus on Africa radio that the military has fired tear gas to disperse a peaceful march on headquarters of the national electoral commission in Libreville.
The military stopped supporters of Mr Ping, who lost the presidential poll by fewer than 6,000 votes, from marching forward about an hour ago and they'd been negotiating to be granted passage.
She says there are thousands of protesters, including many young people, and that black smoke can be seen rising into the skies from people in the suburbs burning tyres.
The BBC cannot independently verify her statement.
Somali law graduate makes history
Sixty-year-old Safiyo Jama Gayre has graduated from Puntland State University in Somalia – making history as the institution’s oldest female graduate.
She told the BBC Somali Service she went to study law – and Sharia – in order to help victims of rape and other issues affecting women.
In divorce settlements, it is usually the man who gets everything - but she says her studies showed that this was wrong:
I found no place in our religion to hurt or harm women - therefore this culture must end."
She said that at first she was the butt of friendly jokes from her younger classmates during her four-year course, who fondly called her “grandma”.
But, guess what, I was the first student to submit my thesis."
Footage 'shows Gabon protests'
France 24's citizen journalism platform Les Observateurs has posted video on Twitter that it says it has received from the Gabonese capital, Libreville, where opposition protesters are reportedly clashing with security forces.
At the end of the clip, the camera zooms in on one protester lying on the ground near to the security forces' frontline. The person taking footage asks whether the man is dead or injured.
Nigeria’s second-largest commercial airline, Aero Contractors, has announced it will suspend “schedule services” from tomorrow.
It is the third airline to suspend operations in Nigeria: Iberia suspended its route to Africa’s second biggest economy in May, followed by United Airlines the following month.
According to Aero Contractors, the operating environment in Nigeria has hindered any possible progress especially in the last six months when the local currency, the naira, depreciated against the US dollar.
The announcement effectively means the company, which has more than 1,000 staff including engineers and pilots, is closing up shop.
Five years ago Aero Contractors had about 18 aircraft and multiple helicopters, but as of July this year, the fleet comprised only two aircraft.
It mainly flies from Lagos to the capital, Abuja, and to coastal states.
The news comes on the day figures showed Nigeria’s economy had officially slipped into recession.
Gabon opposition refused to validate poll results
Delegates representing the opposition in Gabon's national electoral commission (Cenap) walked out of the vote count and refused to sign papers validating President Ali Bongo's victory, according to the BBC Afrique reporter in Libreville Charles .
There has been no independent statement from the Cenap, with official results announced by the country's interior minister.
Should Africa's police recruits be put through the lie detector?
Whenever I see a policeman, I run away because he sees me as an ATM."
That's a quote from Tendai Biti, Zimbabwe's finance minister, in an article about whether police recruits in Africa should take lie-detector tests.
Columnist Farai Sevenzo suggests this very proposal by Nigeria's police chief could be expanded across the continent to ensure "acceptable standards", as he says "force is the default setting for African police".
But Farai wonders whether a polygraph test would seek to find out recruits' sympathy for beaten citizens or their loyalty to police chiefs.
There have been clashes between security forces and protesters shouting "Ali must go" in Gabon's capital Libreville, soon after the announcement of President Ali Bongo's election victory, AFP news agency reports, whose reporter is at the scene.
Security forces fired tear gas and smoke grenades to push back protesters who were trying to get close to the headquarters of the national electoral commission, AFP adds.
Africa's first-ever aerial elephant census
BBC Africa correspondent
The first-ever aerial survey of Africa’s savannah elephants has shown a dramatic reduction in their numbers.
The Great Elephant Census discovered nearly a third of the continent’s elephants – some 144,000 animals – have been killed, mostly by poachers in just a seven-year period.
For two years small planes have been buzzing across 18 African countries, and the scientists on board have been counting elephants.
The figures are dramatic: Tanzania lost 60% of its elephants and Mozambique half their elephants in just seven years.
Poachers have struck in Angola and Zambia and are starting to encroach on Botswana, which is seen as their last sanctuary where 40% now live – aware of the dangers elsewhere.
The census comes to a depressing conclusion: if this continues, half of Africa’s remaining elephants will be gone in just nine years.
Gabon president wins disputed poll by '5,000 votes'
According to Gabon's official election results, announced in the past half-hour by Interior Minister Pacome Moubelet-Boubeya, incumbent leader Ali Bongo gained 49,80 % of the vote, defeating his main rival Jean Ping, who had 48.23%.
President Bongo received 177,722 versus 172,128 for Mr Ping, making the margin just more than 5,000 votes.
It said he was a former recruiter for the al-Qaeda-affiliated al-Shabaab group and pledged his allegiance to IS in October.
He has set up his cell in the north-eastern Somali region of Puntland and has expanded it by “kidnapping young boys aged 10 to 15, indoctrinating them, and forcing them to take up militant activity”, the statement said.
Today’s action notifies the US public and the international community that Abdiqadir Mumin is actively engaged in terrorism."
BreakingGabon interior minister declares Ali Bongo election victory
Gabon's Presdient Ali Bongo has been declared winner of the presidential election by the country's interior minister, according to the BBC Afrique correspondent in the capital, Libreville.
More to follow.
Sunderland sign Gabonese footballer Ndong
Twenty-two-year old Gabonese player Didier Ndong has signed for Premier League club Sunderland, moving from French side Lorient for a fee of 16m euros (£13.5m, $17m).
Ndong, who joins the Black Cats on a five-year deal, said it was a "beautiful day":
I am very proud and happy to sign for Sunderland. This is a new adventure for me and to play in the Premier League is a dream come true.
Maybe the Sunderland fans don’t know me yet, but I promise that they will quickly discover that I will give everything for them and the club. It will be an honour to wear the Sunderland shirt and I will wear it with a true understanding of what it means."
Nigeria blames oil sector as country slips into recession
The Nigerian government says that it remains "hopeful" about the trajectory of the country's economy, despite the "temporary decline" in GDP growth, which has pushed Nigeria into recession for the first time in more than a decade.
Poor growth was "mostly due to a sharp contraction in the oil sector due to huge losses of crude oil production as a result of vandalisation and sabotage", according to a statement from the vice-president's office.
Crude oil sales account for 70% of government income.
The government also pointed to "growth recorded in the agriculture and solid mineral sectors" as a cause for optimism.
It added that the forecast for an annual GDP contraction of 1.2% was not as bad as the International Monetary Fund prediction of 1.8%.
South Africa's days of rolling blackouts, locally known as “load-shedding” are over, according to the head of country’s power utility.
Eskom CEO Brian Molefe has just made the announcement to a committee of MPs:
Eskom is on a firm financial and operational footing. Our financial performance has improved with a healthy liquidity position. Generation performance has been stabilised with continued improvement expected. We do not anticipate any load-shedding going forward."
Mr Molefe also denied rumours of corruption at Eskom and emphasised that Africa’s largest power generator is now well positioned to start delivering excess capacity.
South Africa was plunged into darkness in 2008 and again in 2015 when power cuts slowed down productivity, particularly in the mining industry, negatively affecting the country’s economic growth.
How Nigerian company secured millions in investment from Zuckerberg
One of the first places the Facebook founder went on his surprise visit to Nigeria (see earlier posts) was to Andela, a homegrown company that trains coders.
Mark Zuckerberg and his wife Priscilla Chan recently invested $24m (£18m) into it through their new multi-billion dollar initiative.
Seni Sulyman, one of the Andela directors has been telling the BBC's Outside Source how they did it:
Ghanaian winger Atsu goes on loan to Newcastle
BBC World Service
Ghana and Chelsea winger Christian Atsu has signed for Newcastle on a one-year loan.
I understand that there is an option to buy if Newcastle get promoted.
The 24 year old hasn’t made a first-team appearance for Chelsea but has had loan spells at Everton and Bournemouth.
He spent the second half of last season on loan with the La Liga club Malaga.
Atsu won the player of the tournament award at the 2015 Africa Cup of Nations.
English Premier League clubs splash out £1bn on new players
The summer spending spree by English Premier League clubs has exceeded £1bn ($1.3bn) mark for the first time, according to Deloitte’s Sports Business Group.
It's the first time Premier League clubs have spent more than £1bn in a single transfer window, following last year's signing of a record £5bn three-year TV deal, which was 71% higher than the previous one.
Sunderland manager David Moyes personally vetoed an £18m ($23.6m) bid from Everton for powerful central defender Lamine Kone, who has been outstanding since his £6m move from Lorient in January, despite the Ivory Coast international being keen on the move.
The Toffees remain interested and will try their luck again - and will perhaps hope Moyes relents as deadline approaches.
And, as they struggle to sign a central defender, might Chelsea even be tempted?
What's Up Africa: Blame patients for bad healthcare?
In some public health services in Africa there is a lack of drugs, beds and personnel, but who is to blame? Satirist Ikenna Azuike has an idea.
He's in Malawi and says it is neither the government's nor the health workers' fault - people should start blaming the patients.
Burundian aubergine smugglers 'shot dead in Rwanda'
BBC Africa, Bujumbura, Burundi
Two Burundian aubergine smugglers were shot dead last night on the Rwandan side of the border, Burundi’s police spokesman, Pierre Nkurikiye, has said.
He tweeted that the incident happened at around 03:40 local time near the border post of Ruhwa, and named the men as Fidele Niyonkuru and Jeremie Nyabenda.
In July, Burundi banned public transport and all trade in food with Rwanda on security grounds.
Aubergine and tomato farmers in the north-western Cibitoke province have been severely affected by the decision as they sold a lot of their produce in Rwanda.
Relations between Burundi and Rwanda have deteriorated over the last year, with Bujumbura accusing Kigali of hosting the May 2015 coup plotters and offering material and military training to Burundians living in refugee camps in Rwanda.
Tension as Gabon opposition candidate 'disputes unofficial results'
As voters in Gabon await presidential election results (see earlier post) the main opposition challenger has demanded a recount, following unofficial reports of a victory for incumbent President Ali Bongo, Reuters news agency reports.
Jean Ping's camp are challenging a reported 99.9% turnout in Haut Ogooue province, Reuters adds, quoting a spokesperson.
Haut Ogooue is the heartland of Mr Bongo's Teke ethnic group, the AFP news agency reports.
European Union monitors have called for Gabon to publish "detailed results" for every polling station and urged all actors to help keep the peace, in a statement released on Wednesday.
Opponents of the country’s veteran President, Robert Mugabe had called for a nationwide stay-at-home protest.
Activists under the banner Tajamuka, meaning "we strongly disagree", called for the shutdown to denounce the 92-year-old leader's government as brutal and plunderous.
Tajamuka spokesman Promise Mkwananzi was among nearly 70 people arrested during protests in the capital, Harare, last Friday. Their bail hearings are ongoing.
A one-day stay away organised in July led to a complete shutdown of schools, businesses and shops across the country. Its success may have been boosted because of a row over delayed payments of civil servants' salaries at the time.
One tweeter suggests a shutdown needs to be supported by minibus drivers for it to work:
The party has called them to protest at infringements on freedom of expression and democracy in Tanzania since President John Magufuli came to power last year.
His government has barred public and in-door political meetings in the country.
Earlier this week, several Chadema politicians were briefly detained at a meeting to plan the demonstrations.
Tunisian dawn raid 'finds suicide belt'
Tunisian police killed two suspected Islamist militants, seizing arms and an explosive belt prepared for suicide attacks, Reuters news agency quotes the interior minister as saying.
The operation took place during a dawn raid in a Karma town in west-central Kasserine Province following an earlier ambush on an army patrol, it said.
Al-Qaeda-linked militants are based in the remote mountains bordering Algeria and often carry out attacks on military patrols and checkpoints, using nearby towns and villages in Kasserine province for smuggling supplies and hideouts, Reuters reports.
Slow birth rate found in African forest elephants
Science correspondent, BBC News
African forest elephants have an extremely slow birth rate, putting them under greater pressure from poaching, research suggests.
Scientists have found that the animals start to breed at a later age and with longer intervals between calves than other elephant species.
The researchers say it means it could take decades for this species to recover from recent dramatic declines.
The study is published in the Journal of Applied Ecology.
Prof George Wittemyer, from Colorado State University, US, and the chair of the scientific board of Save the Elephants, said: "I don't think any of us realised how sensitive this species was.
The basic biology of this species is designed for a system where they grow slowly, where they increase in number slowly, and the pressure we're putting on them to harvest ivory is simply too much for them to bear