Flopped weak 2nd pair from BB

[Eihli]

MP is 48/12/1.7
This seems like a very common situation that I should have a default play for against unkowns, lags, and tags.

Party Poker 5/10 Hold'em (6 max, 6 handed) converter

Preflop: Hero is BB with 8[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/diamond.gif[/img].
UTG calls, MP calls, <font color="#666666">2 folds</font>, SB completes, Hero checks.

Flop: (4 SB) Q[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/spade.gif[/img], 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, UTG folds, MP calls, SB calls.

Turn: (3.50 BB) K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, MP calls, SB folds.

River: (5.50 BB) 4[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">MP bets</font>, Hero calls.

Final Pot: 7.50 BB