I've used them a couple of times... No interesting results. Other than that simple to use and friendly customer support.
I have mailed 4 times but no responses from support or accounting. Today, having online support and this is the result The rules in a different address to be effective in 1800banners. The page, set the google ads?
dont use them!! they sell credits at a rate of 10 cent CPM and you exchange them at 0.1 cent CPM rate, trust me no one can get 1$ from them!!! also, you can request for a free upgrade if your site is big and important, this way you can exchange credits with money,.. funny thing is when they accept you, you will lose the option to transfer credit.. although its a free option!!! My advice DO NOT UPGRADE, your risking your money!! in terms of support... no replies after several attempts... live support was never online, and i tried many times even 5 am