Shawn Hardin, President and Chief Executive Officer of Flock, has announced the release of version 2.5 of the Flock social web browser based on Firefox 3. Flock automatically manages updates and media from several popular social services, including MySpace, Facebook, Bebo, Digg, YouTube and Twitter. According to Hardin, Flock is "designed to be the essential browser for the most active 25 per cent of users".