Is this line horrible w/ no read?

[pantherhound]

I've hardly seen anyone at $50 NL do this with a set (as i might) and I couldn't see a flush draw betting this way either. if he keeps slinging money in there thinking i was drawing that is better than raising the otherwise harmless flop?

------HAND 4------
Game #1346248073: Hold'em NL (£0.15/£0.25) - 2005/11/17 - 16:07:39 (UK)
Table "Alkes" Seat 4 is the button.
Seat 1: zebidee99 (£54.85 in chips)
Seat 2: Smiffy44 (£27.55 in chips)
Seat 3: Donster (£11.55 in chips)
Seat 4: Mattbdd (£3.65 in chips)
Seat 5: Stena69 (£24.75 in chips)
Seat 6: Hanzozoo (£20.35 in chips)
Seat 7: Topboss (£37.65 in chips)
Seat 8: Slyngbom (£24.75 in chips)
Seat 9: Nata1207 (£24.70 in chips)
Seat 10: SteGenius sits out
Stena69: posts small blind £0.15
Hanzozoo: posts big blind £0.25
----- HOLE CARDS -----
dealt to Smiffy44 [Ac Ad]
Topboss: folds
Slyngbom: folds
Nata1207: folds
zebidee99: calls £0.25
Smiffy44: raises to £1.25
Donster: folds
Mattbdd: folds
Stena69: folds
Hanzozoo: folds
zebidee99: calls £1
----- FLOP ----- [2s 4s 9h]
SteGenius sits back
zebidee99: bets £3
Smiffy44: calls £3
----- TURN ----- [2s 4s 9h][9c]
zebidee99: bets £4
Smiffy44: calls £4
----- RIVER ----- [2s 4s 9h 9c][2d]
zebidee99: checks
Smiffy44: checks

[Fnord]

It's fine, although I probably raise the turn.

[Silly String]

Not horrible, but I raise the flop to 6 with a spade draw on the board.
I kinda like the smooth call though, it gives him another chance to put money in the pot on the turn. Which do you think is more profitable?

As an aside, if he hits his trip 9s, do you think he check-raises you on the turn? or does he bet out not wanting to give a free card to the spade draw?

Fnord's turn raise might be the line.