After reading an article by The Whisperer I got interested.. ever wanted to ask someone about their salary, but wasn't sure whether it would be appropriate? Or feeling you'd want to do a reference check on your future employer's work ethics, treatment of work life balance etc.? This site is for you!
Be aware though that you give away personal information, which may never be used as you expected. For those that are uncomfortable with that I would recommend not to use the site and find other means of reference checking.
Considering the site only just started and is in it beta I give it a "thumbs up".