The 13th Age Google+ community's history has been preserved at Tapatalk! Yes, the six years of fantastic discussion is all there, and you can continue the conversation by logging into Tapatalk using your Google account, if you so choose. You can also login with your Facebook account or create an account with an email address.
Please check it out, and let me know if you run into any issues. The developers have been super easy to work with when I found a couple of issues.