On cake, over 20k hands I've found it extremely important to value bet every opportunity. I haven't seen this particular player get out of line yet, but he doesn't have a full stack and usually that means donk. Cake players are usually loose/passive but on occasion will throw in donkey bluffs.

http://cakepoker.com/HandHistory/?Hand= ... wcLCxMA%3d

I have KQ with the . After he raises the value bet on the river I'm getting just about 3:1 (146 pot and $50 to call.) I folded as shown in the hand. Should I have? Is my bet sizing on the river to blame for this situation?

Any other comments are appreciated as well.

A checkraise all in on the river is rarely a bluff me thinks, I would fold as well.

I'd bet the turn because a) it's cake poker and b) he's not full stacked. I want to get all his money in the pot with whatever random hand he has and I think made flushes only make up a small portion of his range. He can easily have a King with or without a heart, a lower pair with a heart that will call or CR, the bare Ah that will call or CR, a PP with a heart that will call or CR, etc etc. You're only in horrible shape against the nut flush. You're in decent shape against 2pairs and you're drawing live if he has a lower flush. If the river is another heart you may lose value out of hands that would have put all their money in on the turn but are afraid to do so now due to the scary board.