[Russ McGinley]

Bad players that check-raise you on the turn on a board that isn't threatening almost always means a set. Moreso when they didn't raise preflop. Like, lets say there's 4 limpers and the blinds in an unraised pot. You have, like KQo in MP and you limped. Flop is K-6-2r. You lead out and a couple of people call. Turn is a 9. Now you get check-raised by a L-P donk. He almost always has a set of sixes or deuces. Or he will have K9. Bad players (ie: loose-passives) don't raise unless they have at least two pair. They may bet out with top pair, but if raised, they will c/c down and hope. If you get a lot of resistance from a bad player, he/she will almost always have a set.