(5/10) Flopped set, multiple opponents. River play?

[RiverMel]

What do you do on the river?

Party Poker 5/10 Hold'em (10 handed)

Preflop: Hero is UTG+1 with T/images/graemlins/heart.gif, T/images/graemlins/diamond.gif.
<font color="666666">1 fold</font>, <font color="CC3333">Hero raises</font>, <font color="CC3333">UTG+2 3-bets</font>, MP1 calls, MP2 calls, <font color="666666">5 folds</font>, Hero calls.

Flop: (13.40 SB) 9/images/graemlins/club.gif, 4/images/graemlins/spade.gif, T/images/graemlins/club.gif <font color="blue">(4 players)</font>
Hero checks, <font color="CC3333">UTG+2 bets</font>, <font color="CC3333">MP1 raises</font>, MP2 calls, Hero calls, <font color="CC3333">UTG+2 3-bets</font>, <font color="CC3333">MP1 caps</font>, MP2 calls, Hero calls, UTG+2 calls.

Turn: (14.70 BB) Q/images/graemlins/spade.gif <font color="blue">(4 players)</font>
Hero checks, UTG+2 checks, <font color="CC3333">MP1 bets</font>, MP2 calls, <font color="CC3333">Hero raises</font>, UTG+2 calls, <font color="CC3333">MP1 3-bets</font>, MP2 calls, <font color="CC3333">Hero caps</font>, UTG+2 calls, MP1 calls, MP2 calls.

River: (30.70 BB) 7/images/graemlins/spade.gif <font color="blue">(4 players)</font>

[David BB]

No sweat, just bet!

[TheHip41]

Seeing as how the flush that got there was backdoor, I'm betting this river until it's capped, everytime. If they caught a straight, or backdoor flush, lucky them.

[bakku]

Bet bet bet, if anyone else other than MP1 comes alive I just call but I 3-bet if MP1 is doing the raising.