[wyrd]

I think it's basically this; Generally speaking how often are you called by a second pair or lower kicker? How often does a second pair or lower kicker go all-in?

I guess what I'm saying is, don't be so willing to go all-in with just a pair.

Hand 1: I'd continue betting on the turn, he could be on a flush draw. If he calls again check/fold the river to any decently sized bet (especially since the possible flush draw showed up). Obviously if he raises on the turn you're folding.

Hand 2: It's possible he has QJ or JT that he's calling with. You bet the turn again, but he check-raises. That's not good. He could even have a 9T for a straight. I think this hand is very easy to get away from once he pushes.