wouldn't even have to do that, right now their ads suck...they are either "hey pay us $20-$30 to advertise on reddit", thanks for not using adblock, buying some reddit schwag, yay reddit, and once in a while you see Amazon or some anime shows ads.
that's it...why can't they go to Honda and get them to pay them money to promote buying a Civic? or Coca Cola? etc etc/
I don't use AdBlock very much, but I must admit that the "thanks for not using adblock" message made me to promise myself that I'll never use AdBlock on reddit.
Look at their site, 2 total ads on the main page, one per comment page.
They could bump that to 5 per page without breaking a sweat. There's their revenue.