NL 50: folded a busted draw. should I have fired two?

[Pokerdemic]

My first orbit and unknown villain. I think this is standard. I opted for the free card. Is he folding anything if I fire again on the turn given the blank?

Poker Stars - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 5 Players - (LegoPoker Hand History Converter)

SB: $20.55
BB: $46.20
UTG: $18.65
Hero (CO): $51.15
BTN: $24.25

Preflop: Hero is dealt A[img]/images/graemlins/diamond.gif[/img] T[img]/images/graemlins/diamond.gif[/img] (5 Players)
UTG folds, <font color="red">Hero raises to $2.00</font>, 2 folds, BB calls $1.50

Flop: ($4.25) 7[img]/images/graemlins/club.gif[/img] 9[img]/images/graemlins/diamond.gif[/img] 6[img]/images/graemlins/diamond.gif[/img] (2 Players)
BB checks, <font color="red">Hero bets $3.00</font>, BB calls $3.00

Turn: ($10.25) 2[img]/images/graemlins/club.gif[/img] (2 Players)
BB checks, Hero checks

River: ($10.25) 3[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">BB bets $4.00</font>, Hero folds

[Nemesis69]

Without reads it's very hard to tell. Maybe he calls down cbets pretty light.

Against an unknown I think it's ok to take the free card.