Facebook IPO: analysts warn investors away as more shares hit the market

As early investors decide to cash out, some consultants warn first-day bubble will burst once the cultural spectacle wears off

Five reasons not to buy Facebook shares

The sale will likely generate billions, but hidden just beneath the buzz are signs that not all is well for Silicon Valley's star

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

Live webchat: Francesco Caio on BT and Britain’s broadband future

Francesco Caio, a former chief executive of Cable & Wireless and one of the architects of the government's existing broadband strategy, will be here on Wednesday 16 May between 11.45am and 12.45pm (BST) to take part in a live Q&A. Post your questions now

Ailing Nokia falls back on patents legacy

Mobile phone maker steps up quest for royalties from rivals that it says infringe its patents. By Charles Arthur

Q&A: Boris Ivanovic on Britain’s Broadband Vision

The internet entrepreneur was here on Friday 11 May from 2-3pm (BST) to take part in a Q&A

Oracle-Google trial: both sides win, or lose, in the first round

Jury deadlocked on whether use of Java to build Android mobile operating system amounted to 'fair use'. By Charles Arthur

Can RIM afford to make developers wait for BB10?

Matthew Baxter-Reynolds: The paucity of the development tools for the BlackBerry platform let it down compared to its competitors. The improved tools for BB10 might be too late

Samsung Galaxy S3: the latest bid to dominate the Android market

A 4.8in screen on phone which adds voice controls and high-speed 'beaming' aims to cement Samsung's position in world smartphone and Google Android markets. By Charles Arthur

Ahead of Galaxy S3 launch, Samsung still trails behind iPhone in UK

Despite rapid adoption of the Samsung Galaxy SII, Comscore figures show Samsung is second most popular smartphone maker in the UK. By Charles Arthur

Rivals launch a printing revolution that could be as significant as Gutenberg

Landa and Xeikon to unveil new inkjet and toner technology at drupa exhibition in Düsseldorf. By Mark Piesing

Samsung and Apple now have more than 50% of phone market, says IDC

Latest figures for first quarter show growing dominance of two manufacturers while competitors such as RIM, Nokia, HTC and Motorola struggle for profitability. By Charles Arthur