i think bidvertiser is good and bad.
I currently use bidvertiser. At first the ads didn't work. They either did not come up or they just came up with "page cannot be displayed" where the ads where supposed to be. If they did load, and that was rare, they would take like 30 seconds to come up.
Anyway, i contacted support, and i must say, their support is brilliant, they replied in 10 mins. They sorted it out somehow and now my ads load straight away.
The ads displayed are somewhat close to web hosting, but no exactly. Some are about making money on the web, and sending emails etc etc.
But the good thing is, you can choose (on bidvertisers website when you login) what ads you want, and you can approve or decline.
is that a good review for ya?