nlivo,
ElectricHermit and
kiwi031 you are all too kind, especially
kiwi031 who calls me a gentleman.
Of course what I am saying is nothing new (so I can't take the credit!), but what perhaps is new is a company of Apple's size launching a cloud product for the consumer market.
Also, the fact that, as ever, they control not just the software (the cloud) but also the hardware - a 360° complete solution.
Even though @me.com sounds self-indulgent, Apple is pragmatic about names (ref: MacBook - it's not classy but it works). Me.com is supremely simple and easy-to-use, and we all know how much Apple loves that.
Another thing about names: people don't really care if the service is innovative and reliable (you heard us in the UK, right, Steve?). The most ridiculous name I saw was a computer company called a FRUIT!
ElectricHermit you are right to mention Windows. I think the 'a-browser-is-all-you-need' approach, as dotmac already is, is good enough, but I wonder what the iTunes tie-up might be given that iTunes is Mac + PC. Or they could even make some aspects of it 'Safari only' to entice more Windows users to dip their toe in the Apple water (or should that be juice?

).
Personally I remain a bit nervous about cloud computing as I like the idea that my data is on my hardware thank you very much. But then to be honest I don't live like that - I build websites and trust other companies to host them. I use Facebook, Skype and eBay. So I guess trust is the operative word - there's a lot of sky but whose cloud (as it were) do I trust the most? Apple's not perfect, but by and large I trust them.
I have no idea if such a product will be launched at WWDC, but you'd have to say it could be a great fit for a developers' conference. Sure it leans more towards web applications rather than iPhone or Mac platforms specifically - but in a way it is a whole new paradigm that embraces them both.
Interested in everyone else's input in the discussion too - sorry if this long post sounds a bit me, Me, ME!