I'd be in trouble personally if something happened to Google. At work I use Outlook and a Blackberry, but for “real life” I depend more and more on Gmail, which opens my docs in Google Docs of course, plus Google Calendar which emails me when a family event pops up. I definitely hope they never have a big security breach, because I have been very careless about letting Google have all sorts of information. I've traded a little security for a lot of convenience!