[willyc]

It looks like CO is all in, so we can call or fold. I'm not saying I would fold, but here are a few reasons why I think we're often behind here:

1. Players at these stakes love to play any suited cards, so you will see a lot more flushes.
2. Players at these stakes are always afraid of 3-flush boards and will often c/f even with top pair when one comes. Similarly they do not often represent a flush when they do not have one.
3. Players at these stakes are generally not capable of raising a flush/combo draw on the turn. A turn raise often means better than one pair.
4. Villain is representing a flush draw by cold calling the flop. I doubt he is floating with AQ or something, and I doubt he's raising A9 now instead of on the flop. It really looks like he's shoving a small flush.

I call here getting almost 3:1, but I think it is very marginal.