overpair line on rag flush board

Pokerroom 100nl full ring

I have $90 and have been playing TAG, villain covers

preflop
Villain in mp1 limps, I raise to 4 in mp2 with QQ, lp calls, bb calls, villain calls.

flop
10 /images/graemlins/spade.gif 8 /images/graemlins/spade.gif 3 /images/graemlins/diamond.gif
pot is 16

bb checks, villain bets 5, I raise to 15, lp folds, bb folds, villain calls

turn
7 /images/graemlins/heart.gif
pot is 46

villain checks, I....

[amoeba]

I bet 30.

[Yeknom58]

Why so much? I say bet less.

[amoeba]

ok 25 then.

30 is like 2/3 pot, its not that much.

[element00]

i bet 30 also. but right now I'm working on reconstructing my game from ground level($25's) so my opinion isn't worth that much.. heh