A3s from SB, flops pair of threes

[morberg]

Party Poker 0.5/1 Hold'em (10 handed) converter

Preflop: Hero is SB with 3[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls, <font color="#666666">1 fold</font>, MP1 calls, <font color="#666666">1 fold</font>, MP3 calls, CO calls, <font color="#666666">1 fold</font>, Hero completes, BB checks.

Flop: (6 SB) 3[img]/images/graemlins/club.gif[/img], 2[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(6 players)</font>
<font color="#CC3333">Hero bets</font>, BB calls, UTG+1 calls, MP1 folds, MP3 folds, CO folds.

Turn: (4.50 BB) 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, <font color="#CC3333">BB bets</font>, UTG+1 folds, Hero calls.

River: (6.50 BB) 9[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">BB bets</font>, Hero folds.

Final Pot: 7.50 BB

I think my turn call is disgusting and I probably should have folded my hand here, but I posted to get your comments about betting out on this flop, is that a good move or not?