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Lawyer Christian Weaver has created a series of online videos to teach people their legal rights.
European Commissioner for Justice, Consumers and Gender Equality Věra Jourová says that efforts to get Facebook to comply fully with EU consumer rules are not going to plan.
In July, the European Commission and EU consumer authorities met told Airbnb and Facebook that both tech firms needed to make changes to their terms and conditions, and improve the presentation of services and prices.
Commissioner Jourová has announced that Airbnb has started making changes, but she is seeing very little progress from Facebook.
"My patience has reached its limit," she said in a statement.
"While Facebook assured me to finally adapt any remaining misleading terms of services by December, this has been ongoing for too long.
"It is now time for action and no more promises. If the changes are not fully implemented by the end of the year, I call on consumer authorities to act swiftly and sanction the company."
The Nasdaq is down 0.94% lower at 7,935.15.
Of the FAANGs, Netflix is the biggest faller down 2.56%, followed by Amazon off 2.1%.
Apple's shares are 1.9% lower but reports are emerging that its watches will be spared from the latest round of US tariffs on $200bn worth of Chinese goods.
Facebook is off 0.75% and shares in Google's parent company Alphabet dipped 0.55%.
The Nasdaq has clawed back some ground but is still trading 0.80% lower at 7,945.29.
The so-called FAANGs - Facebook, Apple, Amazon, Netflix and Alphabet’s Google - are all trading lower on reports that US President Donald Trump is close to announce tariffs on an additional $200bn of Chinese goods.
Facebook's stock is down 1%, Apple is off 1.5%, Amazon is 1.9% lower, Netflix has dropped 2.6% and Alphabet has dipped 0.76%.
Facebook is introducing a new tool that will help the company to fact-check photos and videos.
It's part of the firm's latest efforts to stop fake news and misinformation from spreading on its site.
Once the system identifies an image or video that it suspects was altered, human fact checkers then try to verify if the content is real or not.
Until now, most of Facebook's fact-checkers have focused on reviewing articles and posts.
The sharing of visual content "creates an easy opportunity for manipulation by bad actors" who make it appear that someone did or said something they did not, the company said in a statement.
The measures come as Facebook ramps up its fact-checking efforts to protect future elections from foreign interference.