NL10, TP, value bet or free showdown?

[drsmooth]

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

Stack sizes:
UTG: $19.15
UTG+1: $22.45
CO: $20.45
Hero: $9.75
SB: $19.10
BB: $9.50

Pre-flop: (6 players) Hero is Button with T[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/heart.gif[/img]
<font color="#cc0000">UTG raises to $0.4</font>, UTG+1 calls, CO folds, Hero calls, SB folds, BB calls.

Flop: 5[img]/images/graemlins/diamond.gif[/img] 5[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/spade.gif[/img] ($1.65, 4 players)
BB checks, UTG checks, UTG+1 checks, Hero checks.

Turn: K[img]/images/graemlins/diamond.gif[/img] ($1.65, 4 players)
BB checks, UTG checks, UTG+1 checks, <font color="#cc0000">Hero bets $0.9</font>, BB folds, UTG calls, UTG+1 folds.

River: 7[img]/images/graemlins/spade.gif[/img] ($3.45, 2 players)
UTG checks, Hero...



Pre-flop I see a lot of 'bet or fold' but it was an aggressive table, UTG+1 had been pretty hyper in the 10 or so hands I'd been there, and people in the chat were making comments that made it appear he'd been doing it for a while. So I wanted to play the hand but not make the pot too big..

By the river he'd departed anyway, and I had no reads on villain. So with no reads is this a value bet or a free showdown? Besides possibly pre-flop are there other problems with my play?