MacGasm has reported that MobileMe users are now been offered a free upgrade to Mac OS X Snow Leopard. This move by Apple is to try to get these users to move to iCloud before the deadline, where Apple will shutdown MobileMe.
In order to get it, user must go to this link to register for the free copy of Snow Leopard.
The move saves users $30, but users still need to upgrade to Mac OS X Lion in order to get iCloud working on their Macs, which costs $30.
Free is free, so if for some reason you haven't upgraded yet to Snow Leopard, now is the time to do so.