NL50 - QJs Overcards Floating, turn pairs top board card

[Parvex]

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Hero ($53.25)
SB ($53.55)
BB ($67.15)
UTG ($92.75)
MP ($20)
CO ($52.20)

Preflop: Hero is Button with Q[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/diamond.gif[/img].
<font color="#CC3333">UTG raises to $2</font>, <font color="#666666">2 folds</font>, Hero calls $2, <font color="#666666">2 folds</font>.

Flop: ($4.75) 4[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/spade.gif[/img], 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG bets $3</font>, Hero calls $3.

Turn: ($10.75) 9[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, Hero ???

Villain is 25/15/2.7 over about 30 hands.

Is a good idea to float such an basically unknown villain at all. And secondly is the 9 a bad card for us?