I did not spend a boat load of money, because eventhough I read many people saying it was great service, and read just as many terrible notes - I could not decide what was true. At $10, I bought...

I just did what Dani said, and paid $10 for 1,000 visitors.

Results -
572 "unique" visitors showed up.
0 clicked links, of any kind.
Mostly Asian and South American visitors.