As someone else remarked, if you think that your online identity has some value then you really need to own it yourself. Giving the keys to your identity to Google or anyone else potentially gives them a lot of leverage over you.
If you're using Google accounts for any business related activities then you're risking the chance that some bot implementing a set of dodgy heuristics and with no real accountability can shut down your operations at any time (see http://fora.tv/2008/08/08/Daniel_Suarez_Daemon_Bot-Mediated_...)
If you're using Google accounts for any business related activities then you're risking the chance that some bot implementing a set of dodgy heuristics and with no real accountability can shut down your operations at any time (see http://fora.tv/2008/08/08/Daniel_Suarez_Daemon_Bot-Mediated_...)