Are you talking about being an advertiser or a publisher of them? I'm a publisher with them. Also my site was more in entertainment than business.
My experience wasn't bad. They have a fugly ads, but for most it was nice and clean. I set a floor CPM of 0.15 and got a low fill of 15. In the CPM business, I find the best combination is ADSDAQ (first) and burst media (second). With the two of them, I get 80% of my inventory filled and average about $100 per day. ADSDAQ gives me $1.50 CPM and Burst runs stable betweeen $0.50/$0.75
Yeah, that may be actually the reason why he did not see the ads. *I think you should try placing the ads again on your site and wait few hours, because its worth seeing a pretty good cpm rates.
This time try waiting at least a day and if you still can't see the ads, try contacting their support.
I just signed up and I saw your reviews, seems ok, I will report my experience with them pretty soon!
They pay on 25th of every month for previous month earnings (min $50) So if you had earned $65 during May, you will get paid on June 25th..