Facebook unveiled a new system that lets users browse other websites via its portal, it's called Connect and it enables Facebook users to use their login to access other websites.
The system also gives feedback about what a Facebooker's friends have been doing on those partner sites.
Among the first sites visitable through Connect will be the Discovery Channel, social news site Digg, as well as video site Hulu.
Connect was first announced in May 2008 and is Facebook's response to the work of
rivals, such as MySpace, who have rolled out similar systems.
All the sites are keen to ensure that they do not become a place that members go but are the only place they have to go as they can use their login information to get at content anywhere else.
Behind the initiatives are software projects that open up the basic interfaces for the social sites, so others can understand how they format data about members' activities.