Count me in as someone who over-reacted to the news about iCloud not working on SL! 2 months ago - I so desperately wanted Apple to make iCloud work with SL like many previous others have mentioned on this post, for many of the obvious reasons. But I decided to 'check out' the 'alternatives'! And guess what? I think their great! (No wonder why their dumping idisk- it stinks compared to whats out there!)
There's no way in **** I'm buying a new computer just to get Lion. SL is still a solid, top-notch OS - even on my Core Duo iMac (1st gen intel) - it effin' rocks!
People - don't over-react. There is no need to upgrade. If you are too cheap (like me) to go out and buy the latest iPhone/iPad/iMac, then you will do just fine sitting back, uprading your MM account to iCloud on a Windows 7 machine (sometime before the 1st day of summer 12'), then hacking your friendly Mac to accomodate the new changes. Sure, iWeb, Gallery, and iDisk's days are numbered, but life will go on, and you can keep your legacy hardware (until it shorts), and use the better alternatives that are out there!
In short - come the day June 30, 2012 - if still no iCloud for SL? Yawn.