Inducing a bluff?

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Party Poker 0.50/1 Hold'em (10 handed) converter

Preflop: Hero is Button with 6[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/diamond.gif[/img].
UTG calls, <font color="666666">6 folds</font>, Hero calls, SB completes, BB checks,

There won't be a raise from the blinds. I'm the only one who's raised pre-flop in three orbits. UTG is limping with all sorts of junk. Should I have raised or folded here? I feel either one would be a bit better than calling, but I'm not sure.

Flop: (4 SB) 3[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/diamond.gif[/img] <font color="blue">(4 players)</font>
<font color="CC3333">SB bets</font>, BB calls, UTG folds, <font color="CC3333">Hero raises</font>, SB calls, BB calls.

Standard, right?

Turn: (5 BB) 3[img]/images/graemlins/club.gif[/img] <font color="blue">(3 players)</font>
SB checks, BB checks, Hero checks.

SB has done some checkraising and has noticed my aggressiveness, I think. He took some extra time to check and I thought he might pop it. BB wouldn't still be here without some piece of it either. Good check or terrible, terrible free card?

River: (5 BB) T[img]/images/graemlins/diamond.gif[/img] <font color="blue">(3 players)</font>
<font color="CC3333">SB bets</font>, BB folds, Hero calls.

Final Pot: 7 BB
<font color="green">Main Pot: 7 BB, between Hero and SB.</font> &gt; <font color="white">Pot won by Hero (7 BB).</font>

Results in white below: <font color="white">
SB shows Ad 8s (one pair, threes).
Hero shows 6s 6d (two pair, sixes and threes).
Outcome: Hero wins 7 BB. </font>

Thanks for any comments.

NT