I'm pretty much with kitaristi0.

PFR is good.

I think the raise on the flop is just plain nasty. You have nothing for high. This move will only serve to drive out the very people you want to stick around. Call the bet.

You also don't raise the flop because you can see a worthless card on the turn (perhaps a queen of spades?). Don't bet the turn. You have nothing and are drawing for half the pot. If you get raised (like you did), it's a ugly situation. You're really lucky you had as many people as you did still tagging along on this one, although that might mean you're getting quartered even if you do hit for your low.

Betting the river is a good move, but there probably can be a case made for just check/calling with all the people still around.