What’s so wrong with eating alone?
Diane Shipley: A new website allows women to pair up with friendly lunch dates – but surely it would be better to stop stigmatising solitary types
Me and my data: how much do the internet giants really know?
James Ball discovered the information Google and Facebook hold on him is disturbing and creepy, but also comforting
Online identity: is authenticity or anonymity more important?
Facebook and Google want to link online and offline personas, while 4Chan and other social sites prefer people to play with the freedom of pseudonyms
Draw Something gets more social with chat and Facebook/Twitter sharing
Dan Porter talks new features, TV possibilities and localisation plans for popular game. By Stuart Dredge
Tim Berners-Lee urges government to stop the snooping bill
Exclusive: Extension of surveillance powers 'a destruction of human rights'
A life online: ‘I flew to San Francisco to spend the weekend with someone I’d only met on the net’
Poppy Dinsey, 25, is the creator of What I Wore Today – a blog showing her wearing a different outfit every day
A life online: ‘For my generation it’s just normal, you get up and check Facebook’
Rosie Hickland, 17, is a student
A life online: ‘I’m a nerd who likes to keep his private life private’
Nick Perry, 39, is IT manager for a business publisher
Walled gardens look rosy for Facebook, Apple – and would-be censors
In part three of our series, how the rise of app stores and social networks is making the way we use the net cleaner, easier and far more controllable. By Charles Arthur
Instagram and Facebook: the next tech bubble?
Facebook has bought the photo-sharing service for $1bn. What does history tell us about the wisdom of such mega-deals?
Instagram: what is Facebook getting for $1bn?
Is the social network just after another chunk of the world's visual memory, asks Guardian head of photography Roger Tooth
Facebook buys Instagram for $1bn: full statement by Mark Zuckerberg
Facebook has acquired the photo-sharing application Instagram for $1bn
Aid officials aim to use apps and Twitter as new tools in disaster relief
Government will fund projects that explore how social networking technology can help rescue work
Web monitoring will lead to discrimination and blackmail
Bella Sankey: It seems whoever is in government, grandiose ambitions of the security state remain – and the potential for harm is great
Friends Reunited pins hopes on nostalgia
School's out for site once valued at £175m: now it wants people to collect and share their most cherished moments