Let me make it clear to those who aren’t aware of it yet, you can’t signup for google plus on any sign up page for google plus simply – yet.
However, what you can do is:
1. ask for an invitation
2. goto: sign in page for google plus (not the sign up page for google plus) at http://google.com/+ while you’re logged into your gmail or google account and click “keep me posted” button – and then keep waiting for the lucky magic to happen itself (keep waiting :\)
One more way is to get the “invite” link from your fellows using google plus already and use it as link for sign up page for google plus. But its again asking for invitation link thing!
We’re providing invitations to people too. Leave a comment with your email id to get invited to google plus – without needing google plus sign up page!