Twitter says it now has the technology to censor tweets on a country by country basis, as it continues to expand internationally.

Mobile phone giant Nokia reports a loss for the final three months of last year, as sales of mobile devices fell sharply.

With half the world online by 2016, the web economy in the G20 countries is set to nearly double in size to $4.2tn (£2.7tn), research suggests.

South Korea's Samsung Electronics announces a 17% rise in profits in the last three months of 2011, as smartphone sales boosted earnings.

Facebook has "an 800 million-strong Neighbourhood Watch system" to protect against people carrying out malicious acts, the Leveson Inquiry hears.

A European Parliament rapporteur stands down in protest as a controversial anti-piracy agreement is signed by several countries.

The social network and Washington State sue a marketing firm over claims that it deceived users by hiding 'Like' buttons.

The Russian man accused by Microsoft of being behind the Kelihos botnet attack insists he is "absolutely not guilty".