Google is awesome for mail, shared docs, your RSS reader, family photos, etc, but what happens if you lose your account? When Google Owns You is a story of just that, with follow up. It's an excellent point to remember that as awesome as google is, and as "where would they go?" as you think they might be, if one party has all the keys to the kingdom, you aren't free. I was actually thinking at one point about moving some mail services to the google hosted system, and while their webmail is the bees knees, losing that control is just too much, especially after reading this!