i dunno was going to be the beginning of my response as well. i think these games can help make you a lot better at chess. playing computers helped me understand the game. and i think i spent 40 dollars on my portable chess computer back in the day. so this would be cheaper and i assume better then what i had.
but for playing against real people, i prefer itsyourturn.com. i like the tournaments and not having to worry about dropped connections. or cheaters.