Well, Google may be hung up on having real names and addresses so they can send advertising. Opensource Obscure’s account was just suspended. I understand he has appealed.
Tateru Nino has written a good article on what is happening. See: Google seemingly split on pseudonymous Google+ accounts and Google Profiles – It’s okay until it isn’t. She makes many good points in the article.
There are social networks forming for gaming communities. So, we may have avatars registering with those. This would mean a movement away from Facebook and Google+.
The Lab has made some hints that they may be using the folks from Avatars United to create a social network of their own. It may be more accurate to say I’ve taken some of their comments as hints and wildly speculated. But, I think it is a reasonable idea.
Social networks bring people in, which is what the Lab needs to grow. Having a network with RL and SL people together for a gaming network seems reasonable to me.
Whatever, we’ll see in time. In the meantime this development takes the edge off Google+ for me.