I think I'm turning that icloud crap off on my wife's ipad2 and will probably do so on my ipod touch4g also whenever I upgrade it. Nothing about it seems useful for us.
The calendar and contacts are useless to her and I don't use them. We don't need it to push any purchases to other devices since we only have 2 devices and one belongs to her and one to me (we don't need whatever the other buys). We can just do our backups to the computer as always and then we have the option of seeing the backups to restore from unlike on icloud where you backup to it but for some ridiculous reason you can't see your list of backups to restore from.