It's mainly for Mac owners
but the online storage (iDisk) is just a WebDAV share so you can easily mount it on a Windows box.
They have a good Web-based mail client that's cross-platform.
However, the 'iTools' (iLife, iSync, AddressBook, etc.) have the .Mac integration that makes it really worthwhile.
As I say, not for everyone, but darn convenient.
Tom Sinclair
"This is a lovely party," said the Bursar to a chair, "I wish I was here."
-- The Bursar is a man under a *lot* of stress
(Terry Pratchett, Lords and Ladies)