On one of my sites yesterday I had about 50 passwords posted:
http://lol.to/msg.php?bbs=klexxus1&msg=1053116539&pg=1
(The pass file is before the web - so we have some work to do finding out how they got so many)
This is a really small site about my wife - She gets about 10 sign ups a day - About 200 bucks on average -
As soon as we found out about the pass being posted, I put in my best redirect page.
This page includes many pop ups and eventually kills your computer -
I left it there only for a couple of hours and my wife made around 8k$ I eventually took the page out as I did not want to piss off her members - But I can tell you this, there are thousands of surfers who will start up there computers tomorrow and will dial into a site without realising it!
So more bucks will roll in!
I actually hate pop ups and unders - But they really are usefull tools when need be!