I'm about to abandon my .Mac account. My hosting needs being satisfied already, it does not provide me enough value to put up 100/year when what I really use out of it is email. And since Apple has made it impossible to change an existing full membership to a simple email account (10/year), here you go, I'll just drop it altogether and all the spam I get at that address.
If it's not already the case, I guess that third-parties services that provide the backup/iDisk facilities will flourish at more competitive prices. Apple needs to realize that asking for 100 upfront then giving back 20 in Apple Store coupons later (or The Sims, a game that landed many years ago!) is much less attractive than reducing its price to 80 (or even less, but you see the idea).
I might change my mind with Panther. Or when Apple realizes the potential it has to bring the weblogging user experience to the same level as its iLife suite, i.e. simple, intuitive and smartly connected.