I've almost reached the highest infinity stream in Instant Buzz, which is the Leviathan level, obtained at 250 direct referrals. At Leviathan, you earn .3 advertising credits for the surfing habits of everyone you refer up to infinity!
This is where the serious traffic comes.
If you haven't heard of this passive advertising resource, check it out:
5 Awesome Tools to Use When Auditing Your Website
13 hours ago