Flopped trips, where do I let go?

[abarrenfuture]

Let me preface this by saying that I'm somewhat new to NL ring games, having spent most of my time grinding SNGs. Anyway, how badly did I play this?


Full Tilt Poker
No Limit Holdem Ring game
Blinds: $0.05/$0.10
9 players
Converter

Stack sizes:
UTG: $10.10
UTG+1: $3.90
MP1: $3.10
MP2: $12.70
MP3: $10.05
CO: $3
Button: $12.60
SB: $8.85
Hero: $10

Pre-flop: (9 players) Hero is BB with 6[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/heart.gif[/img]
3 folds, MP2 calls, MP3 folds, CO calls, Button calls, SB calls, Hero checks.

Flop: K[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/club.gif[/img] 3[img]/images/graemlins/club.gif[/img] ($0.5, 5 players)
SB checks, <font color="#cc0000">Hero bets $0.5</font>, MP2 calls, CO calls, 2 folds.

Turn: Q[img]/images/graemlins/spade.gif[/img] ($2, 3 players)
<font color="#cc0000">Hero bets $2</font>, MP2 calls, <font color="#cc0000">CO raises all-in $2.4</font>, Hero calls, MP2 calls.

River: 8[img]/images/graemlins/club.gif[/img] ($9.2, 2 players + 1 all-in - Main pot: $9.2)
Hero checks, <font color="#cc0000">MP2 bets $5</font>, Hero ???

Now, I'm sure that I'm beat here on the turn after the AI and subsequent call. The river further kills me (either to a flush or better K) so what could I have done differently to save myself money? And is the river an instafold?

[carnivalhobo]

after 3 smooth calls then a big river bet there is almost no way that MP2 isnt either full or flushed, this is a pretty easy fold. As for the rest of the hand you played it fine. nh

[inspir3d]

well, looks like a fold to me. earlier streets look fine