Shorthanded O8 hand, paired board, shortstacked opponent

[roundhouse]

O8 3/6 6-max, four-handed at the time. I'm in the BB with A[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/club.gif[/img] 3[img]/images/graemlins/spade.gif[/img]

Fold, fold, SB with only $19 in front of him completes, I raise, call.

Flop comes 7[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/diamond.gif[/img] (4SB)
SB bets, I call.

Turn comes T[img]/images/graemlins/heart.gif[/img] (3BB)
SB bets, I call.

River comes T[img]/images/graemlins/club.gif[/img] (5BB)
SB bets (leaving him with $1), I call.


Question 1 - how's my play? All constructive criticism greatly appreciated (I have my own criticism, but it seems more sporting to let you guys rip me up).

Question 2 - assuming you know nothing else about your opponent, what is your up-front expectation of him given he's starting the hand with less than four BB?

Question 3 - given your answer to 1 and 2, would you play any different if the opponent was normally stacked (again assuming you have no other info on him)?

RH