Honestly, no. There are way too many of them out there so it'd be extremely hard trying to get a decent and profitable amount of traffic (unless you have a large advertising budget).
no... I'm high at most popular toplist and today for example about 100 impressions, earnings... almost nothing :] This numbers of uu at toplists are fake and I know why
The strangest thing is - I've looked at my stats - that I get about 100 impressions at AdSense, and stats are showing about 300 uu per day, 70% traffic is from Google. So this must be so crappy traffic that AdSense don't even cath them or display ads.