Right use of check/raiser here?

[crackthis09]

Party Poker 0.5/1 Hold'em (9 handed) converter

Preflop: Crackthis is MP1 with 9[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/club.gif[/img].
UTG calls, UTG+1 calls, Crackthis calls, <font color="#666666">1 fold</font>, MP3 calls, CO calls, <font color="#666666">1 fold</font>, SB completes, BB checks.

Flop: (7 SB) 5[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(7 players)</font>
SB checks, BB checks, UTG checks, UTG+1 checks, Crackthis checks, MP3 checks, <font color="#CC3333">CO bets</font>, SB calls, BB folds, UTG calls, UTG+1 folds, <font color="#CC3333">Crackthis raises</font>, MP3 folds, CO calls, SB folds, UTG calls.

Turn: (7 BB) T[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
UTG checks, <font color="#CC3333">Crackthis bets</font>, CO folds, UTG calls.

River: (9 BB) 3[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Crackthis bets</font>, UTG folds.

Final Pot: 10 BB