I've moved my family's email to Rackspace's hosted email (not exchange). I have an SLA, and I own data. So far the loss of spam filtering and webmail are my biggest aches, soon achieve searching will be added to that list. I sometimes wonder if Google didn't have the same role as anti-virus companies did. Secretly promote viruses to over value their software... Google's spam filtering is amazing now that I have to contend with RS's lackluster spam services, so it's another case of "you need us, because it's a scary world out there."
Whatever the case, I'm happy to be off gmail.