Middle pair against a loose passive and an unknown.

[wildzer0]

I'm working on refining my game and plugging some leaks, and this hand is sort of a textbook example of a tough type of hand for me. MP2 is a loose passive, MP1 is unknown. I'm a bit lost on the river. Did I miss a value bet here or was checking the right move? Also, hypothetically, if I was checkraised on the turn, what's my line? call/fold the river unimproved or call a river bet?

Party Poker 1/2 Hold'em (10 handed) FTR converter on zerodivide.cx

Preflop: Hero is Button with T[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/spade.gif[/img].
3 folds</font>, MP1 calls, MP2 calls, 2 folds</font>, Hero raises</font>, 2 folds</font>, MP1 calls, MP2 calls.

Flop: (7.50 SB) J[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/heart.gif[/img] (3 players)</font>
MP1 checks, MP2 checks, Hero bets</font>, MP1 calls, MP2 calls.

Turn: (5.25 BB) Q[img]/images/graemlins/spade.gif[/img] (3 players)</font>
MP1 checks, MP2 checks, Hero bets</font>, MP1 calls, MP2 calls.

River: (8.25 BB) 7[img]/images/graemlins/diamond.gif[/img] (3 players)</font>
MP1 checks, MP2 checks, Hero checks.

Final Pot: 8.25 BB