[spydog]

Hand 1: I like it. Checking the river against 2 opponents makes sense. If there was a bet and a raise then you can fold for free. If there was a bet and a call then I think you can fold.

Hand 2: I don't like leading this flop. I would be prepared to check-fold. Turn bet is so-so. Against 3 opponents I think someone has an Ace or King 90% of the time. I'm check-folding that river. Gutshots just went ahead of you and you are probably beat by the all-in guy anyway. Worse hands are calling your bet.

Hand 3: Since the BB only has 1/2 BB after his turn raise I am calling this 100% of the time. He'll be raising 6x/2x/air enough of the time. Plus, you will sometimes improve on the river.