Blind Defense and Bluffing

[SnakeRat]

Party Poker 1/2 Hold'em (7 handed)

Preflop: Hero is BB with A[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/spade.gif[/img].
UTG folds, MP1 folds, MP2 folds, CO raises, Button folds, SB folds, Hero calls.

Flop: (4.50 SB) 5[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/heart.gif[/img] <font color="blue">(2 players)</font>
Hero checks, CO bets, Hero raises, CO calls.

Turn: (4.25 BB) 3[img]/images/graemlins/diamond.gif[/img] <font color="blue">(2 players)</font>
Hero bets, CO folds.

Final Pot: 5.25 BB

I happened to know this guy has made a few posts on 2+2, none in micro or SS though.
I figured he was playing reasonably tight aggressive ABC.

2 questions:

Is that hand worth a call in the BB?

Is it worth making a bluff like this at micro, when you are fairly certain your hand is second best?

PS. I checked with the intention of raising and betting the turn if called.