how do you play marginal hands?

[GengisKum]

I always ask myself what to do in these cases when I'm in the big blind and hit something on the flop.
No read on the opponent.

Poker Stars - No Limit Hold'em Cash Game - $0.01/$0.02 Blinds - 5 Players - (LegoPoker (http://www.legopoker.com) Hand History Converter (http://www.legopoker.com/hh))

SB: $1.98
Hero (BB): $5.10
UTG: $6.96
CO: $7.24
BTN: $0.56

Preflop: Hero is dealt 4http://legopoker.com/hh/images/club.gif Qhttp://legopoker.com/hh/images/club.gif (5 Players)
2 folds, BTN calls $0.02, SB calls $0.01, Hero checks

Flop: ($0.06) Thttp://legopoker.com/hh/images/diamond.gif 6/images/graemlins/heart.gif Qhttp://legopoker.com/hh/images/diamond.gif (3 Players)
<font color="red">SB bets $0.04</font>, <font color="red">Hero raises to $0.14</font>, BTN folds, SB calls $0.10

Turn: ($0.34) T/images/graemlins/heart.gif (2 Players)
SB checks, <font color="red">Hero bets $0.28</font>, SB calls $0.28

River: ($0.90) 9http://legopoker.com/hh/images/club.gif (2 Players)
SB checks, Hero checks

Pot Size: $0.90 ($0 Rake)

What you do on every streets? I'm raising on the flop to see if he's on a draw. What you do on the turn? I'm assuming he has a straight or flush draw, but some people just call you down with a made hand. Should I give up on the turn?

[whyzze]

I am only raising the flop if this is a standard thing form the sb when HU.

But you aren't HU. So I just call the flop. Turn and river depend on what he bets. I probably wouldn't raise anywhere in this hand.