2 hands I would like your opinion on

[Str8Fish]

These are from the cryptologic network, so I couldn't get them converted.

1st hand:
I limp in with QJs from MP1. Button calls, BB checks.
Flop comes J78 rainbow. It's checked to me from the BB and I bet, button calls, BB folds.
Turn is a 2. I bet, button raises, I call.
River is a 7. I bet, button raises, I call.

Am I right to keep betting or should I have taken a hint when I was raised on the turn and just called down? When the turn came down as the 2 I figured he got 2 pair, but when the river paired the board with 7s, I figured he/she may have lost his 2 pair advantage. I unfortunately don't have a read on this guy yet.

2nd hand:
I raise UTG with JsJc. Everyone folds except the BB who calls.
Flop is Qd3h7h. BB checks, I bet, BB calls.
Turn is Ah. BB checks, I check cause I'm not sure if he was on a flush draw and is now slowplaying me or if he hit an Ace or previously a queen.
River is a 3c. BB checks, I bet, BB raises, I call.

Is this a fold after the raise? Am I being too agressive betting on the river? I don't have a read on this guy either.

Thank you all for your VERY helpful advice.

[xenthebrain]

I wouldn't openlimp with QJs from MP1. I'd rather raise.
If I raised preflop I would probably call the turn c/r and then c/c the river. In the smaller pot you have since you didn't raise preflop I might find a fold on the turn, otherwise call and c/c the river again.

Hand 2 I would rather bet/fold the turn and take a freeshowdown then the other way around.
Also, there aren't that many hands that would call a riverbet with a hand that you have beat.

Hand 1, I'm guessing he either has a lower pocket pair or was on a draw. If he's tight I might fold to the river raise but I'm not sure.

Hand 2, I'd raise the turn. If he stays in, and is somewhat passive, I'd fold to the river raise.

[bwana devil]

hand 1 - if you think youre behind by the turn but are calling down id check it and call on the river. the bet on the river was too much.

hand 2 - id bet on the turn and fold to a raise. on the river id check and (crying) call.

[sean c]

In hand #1 raise pre flop i almost never open limp that late unless everyone to your left is very loose.

In hand #2 bet the turn and fold to a check/raise unless your opponent is known to be tricky.