Flopped bottom set w/ flush draw on board

[HomerJay]

This has been my standard flop play lately. Am I passing up too much potential money by folding out too many donors?

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) Hand History Converter Tool (http://poker-tools.flopturnriver.com/Hand-Converter.php) from FlopTurnRiver.com (http://www.flopturnriver.com) (Format: 2+2 Forums)

UTG ($51.75)
MP ($56.05)
Hero ($50.45)
Button ($56.35)
SB ($37.95)
BB ($90.80)

Preflop: Hero is CO with 5/images/graemlins/club.gif, 5/images/graemlins/heart.gif.
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $2</font>, <font color="#666666">1 fold</font>, CASH(N)CLAYSPECIALEXCLAMATIONPOINT calls $1.75, BB calls $1.50.

Flop: ($5.75) Q/images/graemlins/heart.gif, 6/images/graemlins/heart.gif, 5/images/graemlins/diamond.gif <font color="#0000FF">(3 players)</font>
CASH(N)CLAYSPECIALEXCLAMATIONPOINT checks, <font color="#CC3333">BB bets $4</font>, <font color="#CC3333">Hero raises to $12</font>, BB folds.

Final Pot: $21.75

[MrMcDoobie]

I doubt he would bet $4 into a $5.75 pot with a flush draw. I think he had mid pair or so and was making a play for the pot. I would probably smooth call this bet and become more aggressive after the turn. Try to make a little bit more with a delayed CR

[Sir Winalot]

Weak sauce, raise to 17.