Overall, iCloud's a little too wispy—too filled with gaps and not-quites and almost-awesomes, to be the start of the post-computer epoch just yet. Again: it's a convenience service. A limited one that's free. But something that's meant to ease shouldn't come with its own frustrations.
I’m concerned about the fact that Apple has removed some of MobileMe’s sync features, which include Mail accounts, preferences, and even Dashboard widgets. Then again, these features tended to be flaky. In addition, although iCloud requires a Mac running 10.7.2, it’ll work fine with any relatively recent version of Windows after you install a special iCloud Control Panel. So in this case, Windows users are getting a better shake, whereas Mac users have to buy an OS upgrade or, if they have a Mac that can’t run Lion, or an application that won’t work with Lion, do without.
In the end, Apple’s iCloud gamble may indeed pay off. I hope it does, and I appreciate the fact that the basic services are free. But for now, color me skeptical.
(IMPORTANT NOTE: These are reviews of iCloud since it actually launched to the public. Some of the pre-launch reviews, like the Wall Street Journal's, now look laughable for overlooking glitches and ignoring the question of how well the service would scale.)