Villain in this hand is inexplicably sat on $1000+.

We've been in lots of small-medium pots together, almost all of which I've won. Some details, to put you in the same frame of mind as me (!):

1) He's been limping about 1/3 hands, raising 1/3 hands, and folding the rest.

2) Once he min raised, and I called and led the T-high flop - he folded.

3) In an earlier hand I raised with AJ, bet the pot on the flop (jack high), he called with a sucker-end gutshot, and then we checked it down.

4) He has also folded the flop when after I've continuation bet it, though, and he folded to a turn follow-up another time after calling on the flop.

5) He's only displayed aggression once, when I checked behind a QJ9 with TT and he led the turn (a 5) 1/2 pot with A5.

6) If he's been paying any attention, the one time I was check raised after a contination bet I folded.

So, that hopefully gives you a reasonable feel for his play (not sure if anything more than "idiot" is required though!), on to the hand...

Villain is BB, I raise to $16 from MP (I've been open raising a fair bit). Villain is the only caller. I have [Qd].

2 to a flop of [7s][9c], $34. He checks, I bet $26 he min raises ($52). I call.

Turn , $138 he leads for $16 (!), I just call.

River . $170, now he leads for $92.

Tough fold? Easy call? Thoughts on flop and turn?

Yeah I guess there are enpugh draws out there for the river bet to be a missed draw.

1/2 pot on the river is more of a value bet than a "weak" bet though, no?

I'm having trouble putting him on a hand though ... he's previously called with draws, and the second 9 doesn't help my hand unless he has Q7?!