First I accessed the Internet through CompuServe, but that was way back before e-mail became a big thing. I'd get maybe one message a month, max. But CompuServe was a long distance call back in those dialup days, so when we got an actual ISP in our area, I signed up and didn't get on CompuServe through dialing a node (long distance). After a few years, I changed ISPs to one that had a less expensive local number. So that was my first e-mail address change. Believe it or not, my former ISP gave me free forwarding to my new e-mail address *for a year*. I've been with my present ISP ever since. I also get something like a gig of space on their servers but I've never used it. I think I switched to broadband a year after my ISP offered it
Changing an e-mail address is a hassle and the only solution is having your own domain, but I really don't need that. I also have rarely used accounts at Gmail, Yahoo Mail, AOL Mail, live.com (same as Hotmail) and Facebook. I hate Facebook but joined because some family members post photos and videos there. I don't really participate in Facebook at all. I rarely reply to requests to be someone's friend and the only ones who are my friends are close relatives (my granddaughter, for instance) . I've turned off as much sharing as possible and when I do go on Facebook, it's usually to make sure they haven't done something that would make my stuff public or visible by "friends of friends."
I googled on Mobile Me and discovered it's run by Apple. First I went to the site with Opera and was informed that it wasn't supported. Nevertheless, it let me into the login page. Then I tried with the latest Firefox and again got the "unsupported" message, though Firefox is listed as acceptable. I guess they don't want Linux users. I did get into the login page, just as with Opera.
It seems the purpose is to sync everything with all your Apple mobile devices and your computers. I think that's what Windows Live is supposed to do, too. I do have an account at live.com which I got primarily for the free 25 gigs of space on SkyDrive (though I haven't used much of it). I don't consider any of these to be eternal.
I've read in a few places that Ubuntu is making big inroads in the server market because of its close and integrated support for the cloud. Like it or not, businesses are moving to the cloud. Fortunately, home users like me still have a choice.