Twitter moves into e-commerce with ‘buy’ button on promoted tweets
Some users in America can now buy ‘click-to-buy’ goods directly from Twitter as part of a trial that sees the messaging service storing users’ payment details
Social media experimentation is start-ups’ rocket fuel
Brands must validate their existence on social media to win the hearts and minds of their customers
PewDiePie switches off YouTube comments: ‘It’s mainly spam’
The star has told his 30 million subscribers that YouTube has failed to address problems with spam and trolls, so he will use other platforms to speak to fans. By Keith Stuart
Buzzfeed reveals ambition to create studio for news games
The social media news giant is getting into games development – but expect interactive quizzes over Grand Theft Auto epics. By Keith Stuart
Miley Cyrus: social media is worse than drugs
Pop star says Googling yourself, Instagram and Facebook ‘hurts your brain’ because of abusive comments. By Samuel Gibbs
Swaziland king’s Facebook exposure of party lifestyle could lose him friends
Anonymous group Swazi Leaks uses social networks to show contrasting lifestyles of monarchy and impoverished citizens
Ricky Gervais pips Caitlin Moran as ‘most influential’ London Twitter user
London mayor Boris Johnson ranked 27th, behind Made in Chelsea stars, footballers... and David Cameron. By Stuart Dredge
Facebook and Twitter users ‘more likely’ to censor their views offline
Pew study warns about ‘spiral of silence’ in US discussion of Edward Snowden’s NSA online surveillance revelations. By Stuart Dredge
How the web lost its way – and its founding principles
When Tim Berners-Lee invented the world wide web 24 years ago he thought he'd created an egalitarian tool that shared information for the greater good. But it hasn't quite worked out like that. What went wrong, asks Stuart Jeffries
How Wavey Garms became the most influential fashion site in the UK
Wavey Garms, a Facebook site set up 18 months ago to sell niche streetwear, has become the go-to site for what’s cool and what’s not. Morwenna Ferrier reports
Islamic State moves to other social networks after Twitter clampdown
The open-source social network struggles to stop Isis accounts spreading propaganda after the murder of photojournalist James Foley. By Samuel Gibbs
Building a better web: the internet need not be doomed
Charles Leadbeater hopes tech firms will stop focusing on getting big and selling out, and devote themselves to doing good
Misogyny online is barrier to social good of web, says Charles Leadbeater
Former Labour policy adviser says abusive web culture, like that suffered by Mary Beard, shows internet has lost promise of mid-2000s as route to collaboration for the better
Boot up: iKettles, Moto 360, Sam Sung Apple card and CryptopLocker keys
Plus, Foursquare 8.0, hotel Wi-Fi, US chip-and-pin and Facebook and Twitter ad crackdown. By Samuel Gibbs and Alex Hern
More than 17,000 sign up to Austrian student’s Facebook privacy class action
Max Schrems, 26, who accuses social network of data violations and supporting NSA spying, calls response to his appeal 'giant'