Can Google+ login show a box, saying logging in with Google +

Rich,
No, there's no way to do that because the Google+ authentication process performs a full redirect to Google's site. With Facebook, we use a popup and then redirect on the same page to your own site.. so we can control the process a little more and post that message. We're looking into a similar option with Google+ for a future release, but it's not available right now.

I hope that helps explain,
Alex

Rich,
No problem for the explanation. We're looking into an improved way for Google+ authentication which could have a popup box, but it's not a high priority right now.. so it likely won't be in the 5.2 release (in a few weeks), but may be in the 5.3 release, around the end of the year.

Thanks,
Alex