How many people bet this flop?

[DMBFan23]

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Party Poker 2/4 Hold'em (9 handed) converter

Preflop: Hero is BB with 3[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/club.gif[/img].
<font color="#666666">2 folds</font>, MP1 calls, <font color="#666666">1 fold</font>, MP3 calls, CO calls, <font color="#666666">1 fold</font>, SB completes, Hero checks.

Flop: (5 SB) 4[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, Hero scratches his head and ????

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I bet with an A/K kicker, those extra outs versus mid pocket pairs are huge, especially since if I get some callers I can't feel too good about my hand. also, flush draws will call which is bad for me.