netmeg - 9:08 pm on Sep 2, 2011 (gmt 0)

Actually you can program the +1 button now to share to your google+ page, as I understand it.

I am not saying I would *intentionally* put the button on a noindexed page, I am talking about where I put the button on pages where alternative URLs (to the same content) can be generated, and where I usually block off those alternative URLs from being indexed. The canonical might help in some cases, but I already have canonical set and I still get crap in the index if I don't specifically block it out. Google is not 100% reliable in this.