Common knowledge is, he gains some amount of profit from donations, although we really can't have any good idea of how much he makes. There is still no real way to know the actual costs of all his servers, and the money he has pulled in from banner and popup ads really isn't clear, either, since he has had them off and on.
Yes, an NF mod is indeed telling you Tazmo steals donations. No need to panic.
Okay, now you can panic.
I'm not here much, but if you have anything to say to me about Tazmo, you're either (a) fanatical, or (b) wrong. If not, we can be friends. Except you, Martyr. We can never be friends.