I use them and do get work thru them, they are a pay per lead deal typically $15-$20 per lead and they send that lead to 3 different contractors. I think in the end it is better to market for yourself, put a little effort into your website and put some signs out do some mailers/door-hangers and you will see results.
Thanks guys, heading over to the other thread now. Got a call from em and talked for a half hour...wrote the post during the conversation and didn't think to search around at that time.