No reads. Does this look OK?

Villian and I are virtually even around 2850 in chips.

Full Tilt Poker
No Limit Holdem Ring game
Blinds: $20/$40
9 players


Pre-flop: (9 players) Hero is SB with
2 folds, MP1 calls, 4 folds, Hero calls, BB checks.

Flop: ($120, 3 players)
Hero bets $97, BB folds, MP1 calls.

Turn: ($314, 2 players)
Hero checks, MP1 checks.

River: ($314, 2 players)
Hero bets $123, MP1 raises to $246, Hero calls.

I'd probably bet the turn but I don't hate this turn line. Your weak lead on river is begging to be raised. Since he only raised the min. I assume you are beat here, because you have to call the bet. I'd prefer a bigger river bet, about 250, or a check then snap call any reasonable bet.

I see the weak lead a whole lot, and I don't really understand it, nor how to incorporate it into my game if I even want to. It is almost always air or a monster, and it is air often enough to raise it every single time assuming stack sizes permit.