Just kidding about the $20, I need more than that
Seriously, one of the benefits of being around a while is bookmark traffic, don't know if they buy much, maybe they just like the free stuff
I get traffic from trades and SE's as well. Top lists are OK too, I don't use a lot of them, but they're ok when you're starting something new that has a good eye catching title & description.
I have a lot of feeder AVS sites that all link to my LL and have links inside the protected pages as well as outside, so that's good for hits.
Gotta mix it up, don't rely on any one thing coz if that one thing disappears you're fucked