First off, the PS2 and PSP can play against each other online.
Being able to pit your wits against literally hundreds of other people is really exciting and ultimately the biggest single challenge for a poker player.
A large percentage of the staff plays both online and here at the Casinos.
I try and play 2 or 3 times a week to stay on my game.
It is really hard to make it convincing enough that you forget you are playing a video game.