I’ll admit it: I use Google+. I feel it’s a better social network than Facebook due to the fact that I can engage with other like-minded people and talk about common interests.
A few months ago, I was invited to the Scrivener Users community, which is, basically, a community for Scrivener users to come together and share tips and tricks, as well as ask questions about the app. It’s a very friendly community, and while I’m not as active as others, I do benefit from it when using the app to write.
If you’re a Google+ user, or even if you just want to browse around as an “outsider”, feel free to check it out.