Depending upon how you use it, it’s really just another marketing or communication channel.
It’s similar to email. When email first came out, there were no email experts, 101 courses, or conferences. It was just another communication channel. Some people embraced it faster than others. People didn’t ask other people if they emailed all the time or if they could be on someone’s email list.
A recent presentation about Linkedin reminded me of this topic. There are a number of people who have no interest in Linkedin, Facebook or other social media channels.
Social media is about something else: marketing, communicating, blogging, journaling.