Thanks for the replies! I read the thread you posted, and point well taken.
It wasn’t super-low-cost bulk traffic, and traffic from this source, does in fact convert for other types of net marketing.
Is 200 clickthrus from 10,000 hits (2%) worth paying for?
Do any of these scams have scripts where clickthrus are simulated? Or does a hit on my Party Poker banner probably mean that humans clicked it, after landing on my page?