Browser Support
I like how the new online applications appear to work, but I'm afraid they my be useless to me. According to Apple's website, you need to use Safari 3, Firefox 2, or IE 7. The problem is that I have no control over what browsers are installed on computers I don't own (work, internet cafe, friend's house, etc). Of the places I frequent, home is the only place that meets the browser requirements. And gee, if I'm home I don't need the online services!
My Windows computer at work has IE 6, and that's 99% of my use of the online .Mac applications. If MobileMe requires IE 7, I'm screwed. If Apple is forcing an upgrade, and that upgrade is incompatible with my computer, can I get a refund? Seriously. If it where an application they were forcing me to upgrade on my computer, and it was incompatible with my computer, I would expect a refund my my purchase price.
Oh, and count me in the ranks of thinking it's a stupid name. I assume that only a very small minority of .Mac users actually have an iPhone or iPod touch. So the whole "mobile" moniker applies to only those few people. Stupid, just plain stupid.