Recently there has been a lot of chatter about how Google Plus is a ghost town. This started me thinking about all the other social networks that don't have the media exposure that Google is able to provide. How many of them would think ghost towns would be an improvement. At least ghost towns have ghosts.
Just a disclaimer, this entire discussion is based on my own skewed perspective. I can only talk about social networks from my own limited social capacity (which is possibly stunted compared to most other people.
I joined a number of social networking sites alone. I usually haven't invited anyone to join these sites with me. Occasionally, I would ask Natalie, but mostly she won't join unless other people join with her. It took almost 3 years to convince her to join Facebook, and that was more due to everyone else who joined, not me. Given that, it is really quite possible that any site only looks like a ghost town, mostly because I'm judging the entire site from my own dark back alley on the edge of town.
This suggests that my experience with any social networking site might not representative.