set after turn aggression on less than stellar board

[punterman]

MP is really loose really suspect in his or her play. Often playing a bit more aggressive versus me than other players. This was likely because I raised pretty much every time I came into the pot.

Party Poker 5/10 Hold'em (6 max, 6 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

Preflop: punterman is CO with T/images/graemlins/club.gif, T/images/graemlins/spade.gif.
<font color="#666666">1 fold</font>, MP calls, <font color="#CC3333">punterman raises</font>, <font color="#666666">3 folds</font>, MP calls.

Flop: (5.40 SB) 3/images/graemlins/heart.gif, 9/images/graemlins/club.gif, T/images/graemlins/diamond.gif <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP bets</font>, <font color="#CC3333">punterman raises</font>, MP calls.

Turn: (4.70 BB) 8/images/graemlins/spade.gif <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP bets</font>, <font color="#CC3333">punterman raises</font>, <font color="#CC3333">MP 3-bets</font>, punterman calls.

River: (10.70 BB) A/images/graemlins/diamond.gif <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP bets</font>, <font color="#CC3333">punterman raises</font>, ..

[wackjob]

I don't understand the river raise. Either you think he was bluff raising the straight on the turn or you don't and you cap the turn? The river play is easy, but I just simply don't get it because of your turn play.

If you have a really loose aggressive here, he could likely be raising the turn with anything from 78 to J10 and you are just about guaranteed he is not folding to a cap on the turn.