Islandoo

The makers of the poor-man's-Big-Brother, reality show Shipwrecked started a website called Islandoo.com for people to sign up on if they wanted to audition for the show.

Well, 18,000 profiles and 10m page views later, its become a fully fledged social networking site.

The makers are now going to export it to the US (as reported in Media Guardian and the FT).