SearchPost.net Anyone having any luck with it?

I just posted an ad on a classified site and they gave me a link to get $500 free PPC at SearchPost.net. I’ve never used them before for PPC. So is it any good?
I guess I should look at it as its free and not costing me anything, but still I’d like to know a little more about how they perform if anyone could shed some light on them.
Thanks

See original post by RedHat39