Just sat down and no reads, but based on the hand I just saw, I suspect the BB is TAG.
Party Poker 2/4 Hold'em (10 handed)
FTR converter on zerodivide.cx
Preflop: Hero is CO with A[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/spade.gif[/img]. Hero posts a blind of $2.
UTG calls, <font color="#666666">
5 folds</font>, Hero (poster) checks, <font color="#666666">
2 folds</font>, BB checks.
Flop: (3.50 SB) 3[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, UTG checks, <font color="#CC3333">Hero bets</font>, BB calls, UTG folds.
Turn: (2.75 BB) 6[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets</font>, BB calls.
River: (4.75 BB) J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets</font>, Hero folds.
Final Pot: 5.75 BB
I would have checked on the river if checked to.