[Scotch78]

I donk this flop 100% of the time. If MP1 has an overpair, he's probably going to raise. Two things happen here: first, it faces three players with two cold, whereas a check-raise by you only puts two players to the test. Second, you get to 3-bet if it's still multi-way. On the other hand, if MP1 doesn't have an overpair, he's probably going to check his overcards in a 7-handed pot.

Scott

edit: Also, with these rags you can't count on somebody else betting if the pre-flop raiser checks.