Facebook emotion study breached ethical guidelines, researchers say
Lack of 'informed consent' means that Facebook experiment on nearly 700,000 news feeds broke rules on tests on human subjects, say scientists. By Charles Arthur
Facebook reveals news feed experiment to control emotions
Protests over secret study involving 689,000 users in which friends' postings were moved to influence moods
Virtual world Second Life to be reincarnated, with Oculus Rift
Linden Lab to launch brand new version of its pioneering digital world in 2015, making use of new technology. By Stuart Dredge
20 best iPhone and iPad apps and games this week
Star Wars Scene Maker, PlunderNauts, Parallels Access, Godfire, Slingshot, Stick Soccer, Juices and more. By Stuart Dredge
20 best Android apps and games this week
Parallels Access, Boom Beach, Slingshot, Nike+ FuelBand, Lumosity, Warhammer 40,000: Carnage, AutomateIt and more. By Stuart Dredge
The newly restored Bletchley Park and the fast-eroding freedoms it was set up to defend
Bletchley Park helped save civilisation. What GCHQ is up to now is another matter, writes John Naughton
Mind Candy and MakieLab hope for success with freemium games
Moshi Monsters spin-off Moshling Rescue ‘isn’t created for children’ while Makies FabLab caps its in-app purchases. By Stuart Dredge
Nintendo’s Shigeru Miyamoto admits ‘uneasiness’ over virtual reality gaming
Reservations less about past Virtual Boy flop, and more about whether gamers ‘spend all their time alone’. By Stuart Dredge
Why the government believes the law is on its side on social media interceptions
Interception of online messages users thought private comes down to where Google, Twitter and Facebook are based
Momo, the Chinese app that exposes sex and generational divides
Momo attracts 100m social networking users, but is trying to shake off its 'hookup' reputation
Why the future of Facebook is (almost) all about your smartphone
10 steps to understanding how mobile is now the driving force behind the world’s biggest social network. By Stuart Dredge
Instagram announces adverts are coming to the UK
Ads have been a hit for the business in the US, but UK user reaction could go the other way. By Alex Hern
Social media is set to be the advertising winner at the Brazil World Cup
Twitter, YouTube and Facebook likely to cash in on advertising boost along with television and radio. By Mark Sweney
Do the new anonymous social media apps encourage us to overshare?
Whisper, YikYak, Rumr: the latest apps encourage you to share the worst with everyone in your address book – anonymously. So which of Oliver Burkeman's contacts is considering an affair?
Viral videos: around the world in 18 seconds
You make a video for your friends, or to impress a date. Then, overnight, it gets an audience of millions – and not all of them like it... Stuart Jeffries finds out what happened next