I have a .mac account, but I won't be renewing it.
Googlemail is a better solution for Email.
The online backup is nice, but I can lose that.
I don't have any other macs, so the backtomymac sync is of no use to me.
The online website/picture/movie gallery features are nice, especially if you use iWeb. But the uploading is so slow that I have now gone elsewhere for my web hosting.
So overall, if you want a simple all-in-one solution, then it's not bad. But for me, it ain't working.
HTH