Maybe, however, Google is trying to change that. E-mail is a perfectly fine choice for the protocol for such messages, but the UI has to change. Look at what th

Maybe, however, Google is trying to change that. E-mail is a perfectly fine choice for the protocol for such messages, but the UI has to change. Look at what they've done in the other direction, brining Talk and Buzz logs into Gmail inboxes, for instance. Why not reverse that and export certain kinds of mails received in a Gmail account out to the Google+ UI?