webdudek - 1:44 pm on Apr 24, 2006 (gmt 0)
I think you can draw attention to referral buttons, since clicking on them won't cost any money, and you won't earn any money from the click.
Only when a a user signs up for Google AdWords through your referral and spends their first $100.00, you'll earn $20.00.
Same about Firefox, only when a user downloads and installs Firefox through your referral, you'll earn something.
But I'm not sure that I'm right. This is what I think.