Protecting my Hand with Middle Pair - A6s

[Wyers]

I'm often guilty of not properly protecting my hand. On occasion, I'll miss or neglect situations where it would have been beneficial to protect. Other times I may do so believing it is the correct play when in fact it was not.

Here are the reads for the following hand:

BB is a solid player. 200 hands 13/9/2.07

MP1 is spewing chips. 34 hands 85/3/0.66 (-$260.00 and sitting to my right [img]/images/graemlins/smile.gif[/img] )



Party Poker 3/6 Hold'em (9 handed) converter

Preflop: Hero is MP2 with 6[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#666666">2 folds</font>, MP1 calls, Hero calls, <font color="#666666">3 folds</font>, SB completes, BB checks.

Flop: (4 SB) 3[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">BB bets</font>, MP1 calls, <font color="#CC3333">Hero raises</font>, SB folds, BB calls, MP1 calls.

Is this raise appropriate in this instance?

If the turn is a blank and BB comes out firing, a fold would be in order, correct?