Android’s Facebook app overtakes iPhone’s for first time

Android app now has 58.8 million daily active users, while the iPhone version has 57.6 million. By Dugald Baird

Twitter stake bought by Saudi billionaire

Saudi billionaire Prince Alwaleed bin Talal has taken a $300m stake in Twitter. By Mark Sweney

Facebook: population growth and tattoos more popular than hard news

BBC is most-shared news outlet, followed by the Guardian, as social network reveals its top UK news stories of 2011. By Josh Halliday

Facebook fixes bug that can let adults view childrens’ private photos

Flaw in Facebook's system for reporting inappropriate content apparently used by adults to view pictures of underage users. By Charles Arthur

Facebook buys Gowalla in assault on location-sharing market

Gowalla to close as standalone service in January as Facebook ramps up its service ahead of planned flotation. By Josh Halliday

Facebook’s problem: how to make money without annoying people

Nils Pratley: BBC programme offered a few choice insights into how Facebook is still miles away from solving the puzzle of how to generate substantial advertising income without enraging punters

Social gaming firm We R Interactive appoints Geoff Heath

Games and music veteran who sold the rights to Beatles songs to Michael Jackson will help in launch of second title. By Mark Sweney

TV review: Black Mirror; Mark Zuckerberg: Inside Facebook; and The Party’s Over: How the West Went Bust

The weekend's TV: Think Cameron has it tough? This prime minister has to have sex with a pig on live television, writes John Crace

‘Yahoo hasn’t done anything in the past 10 years to set the internet alight’

Charles Arthur: The search engine's demise shows a company should never get too comfortable

Effin woman launches online fight for Facebook recognition

Facebook wipes small Irish village off the map because it deems name of Effin in Co Limerick obscene

Charlie Brooker: the dark side of our gadget addiction

We are addicted to gadgets – but what are their side-effects? In his new drama series, Black Mirror, Charlie Brooker explores the dark side of our love affair with technology

Untangling the web: privacy

Aleks Krotoski: The internet is an ideal medium for sharing information, but at what cost to our private lives?

There are no free lunches on the internet

Twitter users will eventually discover – as users of Facebook and Google already have – that there is no such thing as "free" on the web, writes John Naughton

PopCap Games survey claims sharp rise for social gaming in US and UK

Stuart Dredge: Suggests 118.5m people are now playing social games at least once a week – and spending money