50nl - top pair weak kicker, do i call bet on river?

[CarlSpackler]

This is my fourth hand at the table, so I've got no reads. How often am I beat here? I'm getting 2 2/3 to 1 as far as pot odds are concerned, if I call.

Table Table 65159 (6 max) (Real Money) -- Seat 6 is the button
Total number of players : 6
Seat 1: kytrader123 ( $49.70)
Seat 2: HERO ( $50)
Seat 3: Adamka ( $26.90)
Seat 4: imJudy ( $51.20)
Seat 5: grimace1232 ( $80.75)
Seat 6: gislo ( $97.90)
kytrader123 posts small blind (0.25)
HERO posts big blind (0.50)
** Dealing down cards **
Dealt to HERO [ Q[img]/images/graemlins/club.gif[/img], 2[img]/images/graemlins/spade.gif[/img] ]
Adamka folds.
imJudy folds.
grimace1232 calls (0.50)
gislo folds.
kytrader123 folds.
HERO checks.
** Dealing Flop ** : [ Q[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/diamond.gif[/img] ]
HERO bets (1)
grimace1232 calls (1)
** Dealing Turn ** : [ 9[img]/images/graemlins/heart.gif[/img] ]
HERO bets (2.50)
grimace1232 raises (5) to 5
HERO calls (2.50)
** Dealing River ** : [ 5[img]/images/graemlins/diamond.gif[/img] ]
HERO checks.
grimace1232 bets (8)
HERO ????