I just took a look at the site. I'm a little stumped on if they charge YOU to get placed, or if they only charge companies for that. IF they charge you for them to place you with a job, I think that is kind of lame - there are plenty of places online such as monster.com that allow you to look for jobs for free - they only charge companies to place ads with them.
Team Double Click is very legitimate. You don't pay anything, the clients pay. In fact, you can earn as much as $25 per hour!