re: Poker & 50nl 6max ... Set of Queens @ river
In tournament play it is an imperative to win the big pots that you play. That's why late in tournaments you are not really playing small pairs from any position unless you are deepstacked enough or desperate enough to push them. I.E. with an M of 10 you would never limp 55 in EP or really even play it at all. In cash games you can certainly play them profitably.
Thus, in tournament play, you will often see overbets with strong but vulnerable hands, because many many times you just want to push them off the pot (generally they won't call), but sometimes they do. I.E., I have 22 BBs and raise 3xBB in EP with AQo, get one caller from CO. Flop comes QT7 with two spades. The pot is just 7.5 BBs and I put villain (who has 24 BBs left) on suited broadways. I overbet the pot with 19BBs and he folds. Normally I could just bet 2/3-3/4 pot but if I do that here and he gets there on the turn or river, I am left with a microstack. Tournament play is more about money going in preflop and on the flop; playing the turn and river is sort of a foreign concept for MTT/SNG players.
In a cash game you don't have to worry about felting someone and really the fear of getting felted isn't the same, we are almost never going to be this shortstacked unless we really suck.