The "I'm a proud member of ..." syndrome
In this post, I'm specifically referring to Meetups. A few years back, I moved to Las Vegas (for the 3rd time - please don't ask me why!) and decided to start a FileMaker User Group to share my knowledge of FileMaker. To my absolute delight, I had 67 people sign up in the first few days. I then scheduled the 1st meeting at my house. 5 people signed up; not great, but okay.
Not one person turned up; nobody even had the courtesy to send a "sorry, but I can't make it' message. I tried again. The same thing happened. It was then that I realized that all people were interested in doing was joining as many groups as they possibly could, so they could brag about how many groups they were members of. They had no genuine interest in any of them.
I canceled the group and have given up on Meetup. When I join any type of group now, it is because I am seriously interested in it and willing to spend time and energy on it. That's the way we should all be. Quality over quantity.
Let me know if you agree.