The success of the Facebook group, Occipital and Peripheral Nerve Stimulation, has been great, with a current membership of 1700+. That's way beyond what I ever expected. While I expect that to remain the most popular social media platform, I've also created a Google+ community for those who prefer the Google+ platform or don't want to join Facebook. We'll see how it goes. If it isn't popular, I'll probably shut it down in time...one less thing to keep up with.