In your local group or groups, what (if anything) do DMs get as an incentive to run games?
At Pandemonium in Cambridge, there's a $2 play fee for each player; the $12 goes to the DM as store credit.
At my game day in Towson, DMs get priority seating the next time there're too many players, plus I'll run whatever they want at the next opportunity because I'm grateful.
I don't think the local Glen Burnie group does anything special.
Followup question: do you have trouble finding DMs?
Semi-serious followup question: anyone want to go in on an order of custom D20s from Q-Workshop?