AIM in Google Talk

Google has added AIM to Google Talk. For companies like mine, I’m not sure this is a good thing. We implemented IM security after one too many people got infected and the helpdesk was flooded with calls as their computer sent IMs to everyone in their buddy list. For other companies is a compliance issue rather than a security issue. They need to have IM logs.
Its pretty easy to protect the public IM clients using business solutions from Symantec, Akonix or Facetime. IM over HTTP is another matter. Google has always made it tough to block their GTalk over HTTP by integrating it with Google Mail. I haven’t yet heard of a way to block Google Talk without blocking Google Mail. Now they’ve added in AIM to the mix.
update
you can actually block google talk in gmail http://mail.google.com/support/bin/answer.py?hl=en&answer=34330 In DNS point chatenabled.mail.google.com to 127.0.0.1.