I've been full time for awhile. About a year I guess. I still work 40 hours a week, but at least I don't have to commute or deal with the public. If I could make money like Fucker, I'd be even happier.
Baba - one technique I use in my galleries is to never let there be a spot that doesn't have an ad in view. Like the middle. Also look at the page like a surfer and see where your eyes go first, then stick an ad there. Good start though. The key is in numbers...more sites equals more surfers equals more sales.