How thin is too thin?

[Bump_Bailey]

Full Tilt Poker, $0.50/$1 NL Hold'em Cash Game, 6 Players
LeggoPoker Hand History Converter

SB: $111.60
BB: $100
UTG: $222.20
MP: $100
Hero (CO): $173.20
BTN: $46.70

MP posts $1
Pre-Flop: Q[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/spade.gif[/img] dealt to Hero (CO)
UTG folds, MP checks, <font color="red">Hero raises to $4.50</font>, 3 folds, MP calls $3.50

Flop: ($10.50) K[img]/images/graemlins/heart.gif[/img] 6[img]/images/graemlins/heart.gif[/img] 8[img]/images/graemlins/club.gif[/img] (2 Players)
MP checks, <font color="red">Hero bets $9</font>, MP calls $9

Turn: ($28.50) T[img]/images/graemlins/diamond.gif[/img] (2 Players)
MP checks, <font color="red">Hero bets $22.50</font>, MP calls $22.50

River: ($73.50) 3[img]/images/graemlins/diamond.gif[/img] (2 Players)
MP checks, <font color="red">Hero bets $79</font>, MP calls $64 and is All-In

villain just sat down and is a complete unknown. is this standard since he posted oop?