General Motors gives Facebook the boot ahead of $100bn share sale

Withdrawal of one of the world's biggest advertisers days before stock market sale seen as an embarrassment by analysts

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

Apple drops ’4G’ from new iPad name in UK online store

Alteration to 'Cellular' comes after complaints to Advertising Standards Authority over 'LTE' compatibility claims but investigation could still follow in Sweden. By Charles Arthur

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

Drawbridge aims to solve ‘cross-device’ ad targeting problems

US startup decloaks from stealth mode armed with funding from Sequoia Capital and Kleiner Perkins. By Stuart Dredge

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

Student publishes a new Shakespeare text

We're not talking First Folio, mind. This is the world of 2b r nt 2b - but with the highest of motives

ASA forces Apple to withdraw claims new iPad has ’4G capability’

Ban of '4G' label is due to lack of mobile services compatible with the device in UK, Advertising Standards Authority says. By Charles Arthur

Henwood and Rutherford join PPC board

Executives behind 4oD, Pottermore and Unilever join board of Picture Production Company. By Mark Sweney

How will the new law on cookies affect internet browsing?

Websites track visitors' activity, but will legal changes to users' consent make a difference to the Guardian or other sites?

Google posts strong first-quarter results and announces two-for-one stock split

Search giant's first-quarter earnings up 60% to $2.89bn year-on-year, but cost-per-click falls for second quarter in a row

Who would want to live in the Google Glass house?

James Westcott: The augmented reality of Google's 'Project Glass' seems to miss the point about what makes fiddling with a phone addictive

Ludicrous, hysterical, brilliant – the top Republican campaign adverts

Ana Marie Cox: Obamaville is the latest incredible ad in a presidential campaign season that has been notable for its negativity

24 hours in apps media disruption

How mobile is sparking innovation in publishing, music, television, games and beyond. By Stuart Dredge

UK web advertising spend to hit £5bn

Facebook ad revenue expected to increase by 84% as mobile and online video income also soars. By Mark Sweney

Mobile and the news media’s imploding business model

Michael Wolff: Smartphones will soon be the primary news source for most Americans. That's if anyone can still make money by reporting

The shocking thing about the Mail Online’s sidebar of shame

Andrew Brown: The Mail's website appropriates the holier-than-thou prurience of the defunct News of the World, but to what financial end?

Mobile ad spend soars to £203m

App stores and tablets helped drive 157% year-on-year growth in 2011, according to IAB/PricewaterhouseCoopers report. By Mark Sweney

Does it help the homeless to turn them into Wi-Fi hotspots?

John Bird: The idea of homeless people as hotspots is unpalatable until you consider the opportunity for them to become content providers

Chocolate: all round your Facebook

Once, when a chocolate bar was discontinued, that was the end; nowadays it's the start of a social media campaign to bring it back. What would you like to see revived?

WTF, QR Codes?

Craig Villamor and Brad Frost: Most people have no idea what QR codes are, and yet, as our Tumblr project shows, advertisers are putting them everywhere

TV ad revenue hits record thanks to Google and Groupon

A record £4.36bn spent in 2011 as internet giants plough millions into TV ads for first time. By Mark Sweney

Snickers Twitter campaign cleared by ad watchdog

ASA clears marketing drive involving Katie Price and Rio Ferdinand tweeting about chocolate bar. By Mark Sweney

US newspaper publishers can’t find a digital business model

Survey finds that for every $1 earned in online revenue, $7 are lost in print

Havas, the French marketing services group, reports 9% rise in 2011 profits

Growth in digital and social media and emerging markets boosted profit to €220m at Vincent Bolloré's group. By Mark Sweney

Rupert Murdoch confirms first Sun on Sunday sold 3.26m copies

Debut edition is biggest sale of a UK newspaper for four years, with media buying sources impressed at advertising performance. By Mark Sweney

The advert that can tell who you are

It's like something out of the sci-fi film Minority Report – London is to hoast an advertising hoarding that can 'read' passers-by and customise its content to suit them

How Facebook helped elect the mayor in Rapid City, South Dakota

Last year, unknown Sam Kooiker took on two-term incumbent – and scored a stunning win, thanks to a targeted digital strategy

Poster notes: Martha Marcy May Marlene

Paul Owen: Using a QR code in the design of a movie poster risks allowing it to date fast – but then adverts for films are not principally designed with posterity in mind