Just noticed the CO i was looking at was for this month, which I am down. Overall I'm positive on CO.
Seen this month I've had hands like 2 pair on flop all in, person rivered flush. So just some normal hands that I wouldn't be folding in that situation anyway, I don't think!
However still quite a low 3bet% isn't it?
And suurebud, here are some:
VP$IP - voluntarily put $ in pot. Basically means apart from BB, how many hands you're playing. So if you VPIP was 25 over 100 hands, you've played 25 hands. Or over 20 hands, you've played 5 of them.
PFR - Preflop raise. Just shows if you're raising PF, or calling into pots. So someone with 70vpip/10pfr plays a lot of pots, but calls them. whereas 19/17, a tight player who only really raises into pots.
ITM - In the money, used for SNG's.
ROI - Return on investment. Dunno how to explain this one cos I don't play sng's really. But check here http://www.pokerstrategy.com/glossary/ROI_782/
$EV - Expected value, easiest if you check this link again http://www.pokerstrategy.com/glossary/ $EV_2044/
Hope that helps