Well what are your doubts? I've used them in the past, they pay on time via paypal which is handy. The problem is that they are not targetted and they often have a low pay per click. I probably made around $100 in the last few months from them but i dont touch the 2 sites using it. I'm sure there are better ones out there but i cant be bothered to find any Hope this helps
I am just now leaving bidvertiser, i had tried them out but their adds for my particular blogs were not up to scratch so now im using adbrite and ... wow ... my life is complete I would say analyze your adds, watch the clicks and if it doesn't pick up give them the flick.
ill help you with your doubts. if the subject has to do with bidvertiser,don't post it in the adsense forum. i hope that helps.