Microsoft launched test version of Skype Translator decoding conversations in Spanish and English.
Facebook is working on software that could prevent users posting unflattering photos of themselves.
Companies like Facebook and Twitter told to make it clearer to members how they collect and use their data.
Facebook is building a network for professionals to connect and collaborate on work-related documents.
Users of the separate Messenger app have more than doubled from 200 million in April, the company said.
Users will be able to connect directly to the social network via anonymizing service Tor.
An app launched by Samaritans notifies Twitter users if people they follow seem to be distressed.
Timeline views per user, a key measure of user engagement, dropped 7% in Q3.
The site said it had won more than $2B from scam artists who sold fake likes to businesses.
Investment in mobile messaging service may value the start-up at about $10B, reports say.
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