Villain is 47/5 over 81 hands, and I was running 12/10 over the same 81 hands.

Full Tilt No-Limit Hold'em, $0.02 BB (9 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

saw flop | saw showdown

BB ($1.98)
UTG ($1.79)
UTG+1 ($1.86)
MP1 ($3.79)
MP2 ($2.42)
Hero (MP3) ($2.83)
CO ($1.15)
Button ($2.50)
Villain (SB) ($8.28)

Preflop: Hero is MP3 with J, J
1 fold, UTG+1 calls $0.02, MP1 calls $0.02, MP2 bets $0.04, Hero raises to $0.14, 2 folds, Villain calls $0.13, 1 fold, UTG+1 calls $0.12, 1 fold, MP2 calls $0.10

Flop: ($0.60) 6, Q, 8 (4 players)
Villain checks, UTG+1 checks, MP2 checks, Hero bets $0.50, Villain calls $0.50, 2 folds

Turn: ($1.60) 8 (2 players)
Villain checks, Hero bets $1, Villain calls $1

River: ($3.60) K (2 players)
Villain bets $3.60

Preflop, I 3-bet for value and to isolate and as it happens often at the micros, the isolation bit fails miserably as I get three callers. I know the 3-bet is too small with two limpers and the min raiser. I should have made this at least $0.20 I think. Miscalculated/misclicked that on the spot.

I won't bother trying to come up with an exact preflop range for villain, but it is quite large: any pocket pair, any broadways, suited connectors and 1-gappers 67+, two gappers J8+, K9+, A6+, etc. He likes to play any two suited, since I saw him limp J5s UTG, not to say that he would call a raise with this hand, but...

Flop: there is an overcard to my jacks and the board is drawy and everyone checked to me so I decided to bet here, well conscious of the possibility of being check-raised by a queen. I may already be beat, but I think it would be mad to give a free card to everyone in this spot.

Villain flat calls. What's his range here? I'd say Q9+, 67, 68, 78, 89, T8, J8, 66, 88, AK, flush draws and open ended straight draws. Would he raise a made hand? Not sure at all given villain's passivity and the propension to slowplay big made hands like sets at the micros. Stoving this I am a 1:2 underdog against his flop continuing range (33% equity).

He checks again on the turn and I find myself again in this spot where I am facing either a draw or a made hand that beats me. Since he checked to me, I tend to weigh a little heavier towards draws, but I really can't exclude anything from his flop range. He may still be in "trapping" mode or unsure whether his queen is good. He may also have picked up another flush draw here, or made trip 8's. My equity, if I don't discount the made hands for his check, is now only 25%. In light of this, I now wonder whether I should have bet the turn at all.

River is a K and completes a diamond flush draw and he leads big into me. I have $1.19 behind so my pot odds are 20%. Basically, he has to be bluffing more than 20% of the time here to make this a call. I don't think he is bluffing. I have only a pair of J's on a paired board with two overcards and a 3-flush. Reality check: I am beat. Fold, right?

Any comments appreciated. How could I have played this differently, bet sizes, ranges, should I have called this river, was it correct to bet the turn, etc Obviously having 3 callers preflop made this much worse since the pot is already well bloated on the flop.