ya its good but they r paying us for pay per click system and you will find that obeous ads will always not appear in ur site because when sponsor will purchase ad place from ur site then only ad will show in ur site you will get paid not cpm basis but you will get payment on CPC basis and its rates are very low and its difficult to reach even $ 1 i have added it in my blog but no benefit of it.
Thanks.
So I wonder then why some people are using OBeus. Anyway, in the future if I ever want to go for such affiliate networking, I'd go for only bidvertiser which seems one of the best pay per click network now.