In a first, Obama 'tweets' visit to aid center for Haiti (AFP)

AFP - US President Barack Obama 'tweeted' his very first message on Monday, joining the millions who have used the Twitter micro-blogging site as a vital information vehicle for the Haiti disaster.

Reporters put Twitter, Facebook to 'Big Brother' test (AFP)

AFP - Five journalists plan to lock themselves away in a French farmhouse with access only to Facebook and Twitter to test the quality of news from the social networking and micro-blogging sites.