Online chess players?

[Colonel Flagg]

What do you all think of that "Tactics Trainer" thing?

I began by losing points at a prodigious rate, bottoming out in the mid 600's, and have since gradually increased my rating to a (maybe) respectable 870-ish. As my rating increases, I find the difficulty of the problems increases, but at a gradual rate.

I believe it is helping my game, if only to enable me to recognize certain game situations for what they are.