Facebook’s Mark Zuckerberg: from Harvard hijinks to hoodie billionaire

The social network's stock market debut has made Zuckerberg the 23rd wealthiest person on earth but he's no evil genius. By Josh Halliday

Guardian Viral Video Chart: Leveson the Musical; kid wakes up to Nirvana

Legal LOLs as the LJ and QC turn MCs, plus three-year-old turns Dave Grohl in our rundown of the top online clips. By Dugald Baird

Twitter to use Do Not Track

Social network to honour requests from users who do not want online behaviour recorded – unlike Google and Facebook. By Charles Arthur

Desert Island Discs: Margaret Thatcher among new shows to go online

More than 450 editions of Radio 4 show go on iPlayer, also including Philip Larkin, Princess Margaret and John Cleese. By Ben Dowell

A week on the web: Blue Peter moved from BBC1

Children's TV show Blue Peter will no longer be broadcast on BBC1, the BBC announced on Wednesday. Twitter went into a nostalgia-soaked meltdown

London Olympics 2012 diver Tom Daley to launch iPhone app

British 18-year-old who made the finals in Beijing aims to raise awareness of the sport. By Lisa O'Carroll

Nearly 30% of radio listening goes digital – but share of DAB radio slips

Rajar figures reveal a fall in listeners using DAB radios but an increase in those who tune in online or use apps. By John Plunkett

Local newspapers’ crisis: is hyperlocal journalism the answer?

Roy Greenslade presents, after a short break, a further extract from What do we mean by local?. It's taken from chapter by David Baines

How the kindness of (virtual) strangers on Twitter saved my day

Momtaz Begum-Hossain: You told us: After Twitter followers helped me remove a BNP banner from my street on election day, it's my first port of call from now on

Perform buys data company RunningBall for £95m

Sports rights company buys real-time data firm in deal worth up to £95m. By Mark Sweney

Facebook: a tale of two media models

Michael Wolff: The irony of the Facebook epoch is that old media covets its IPO billions, while new social media envies the old's content

Twitter now has 10m users in UK

UK is the fourth-largest country for Twitter users in the world, with 80% accessing it with mobile phones. By Charles Arthur

Five steps to becoming a heavyweight Twitter fighter

Sarah Ditum: You told us: Learn how to be a master of public pugnacity a la Giles Coren or an expert in online exasperation, just like Joey Barton

Facebook raises price range ahead of IPO

Social network has raised price target to $34-$38 a share, potentially valuing the company at more than $100bn. By Charles Arthur

Yahoo chief Scott Thompson quits amid claims of fake qualification

Internet giant replaces CEO with former News Corp executive after less than six months in job. By Dominic Rushe

We are powerless against porn in a new digital era

Legal, cultural or policy frameworks may apply in the real world, but are hopeless as we increasingly step more into virtual life, says Antonia Senior

The secret to tweeting

Twitter isn't solely for media types – an online presence can help in all types of job

Facebook IPO overvalued at $96bn, say investors

Poll finds 79% think social media giant's price tag is too high – but report says next week's flotation is already oversubscribed. By Juliette Garside

Guardian Viral Video Chart: a cornucopia of cuteness. And robots

Watch Prince Charles try out for a new job, a zoo full of babies and a tribute to Beastie Boy Adam Yauch. By Stuart O'Connor, Dugald Baird and Janette Owen

Local newspapers’ crisis: ex-editor on how to reverse decline

Roy Greenslade presents an extract from What do we mean by local? in which former Hull Daily Mail editor John Meehan offers a blueprint for the industry's future

How new technology is helping deliver sexual health services

Text services, apps and social media are being used to provide advice and information to young people. Rachel Williams reports

Spotify and other streaming services get own chart

Official weekly chart to rank plays on platforms including We7, Napster, Deezer, Zune and ChartsNow. By John Plunkett

Leveson inquiry obsessed with print, claims Mail Online publisher

Martin Clarke says inquiry should deal with issues facing newspaper sites and more regulation would threaten their future. By Lisa O'Carroll

Press Gazette goes weekly – on screen

Journalists' trade magazine offers digital content bundle

BBC seeks technocrat with vision

Mark Oliver: The next BBC director general will have to see the corporation though its most demanding and life-threatening period since 1926

Facebook likely to be the fourth richest flotation in stock market history

Despite almost certain IPO success, Facebook has to start making money from mobile phone advertising soon

Having shed Sly Bailey, life at Trinity Mirror can only improve

Dan Sabbagh: It needs to confront the challenges facing its regional papers and beef up its digital offering

Computer says yes: sync your life to save time

There are apps that claim to make cleaning fun and websites that will catalogue the contents of your bookshelves. Oliver Burkeman on a very modern way to organise your life