Only 2 reasons why people think Google+ is a ghost town: 1. you read articles that says it's a ghost town, articles which look at how many people publicly post. 2. Your friends are not on there.
Funny how when you get past those 2 things and start following random people you don't know who have similar RELEVANT interests, then suddenly you are inundated with content. And when I mean relevant, no stupid photos of your cat (YOUR cat not a funny chive/lolcat) and no posts of people taking bout some lame sandwich they had that morning while taking a dump.
Google+ is EXTREMELY busy and has tons of people on there, I follow a bunch of people and a bunch of people follow me and we all have a great time interacting and sharing some really cool stuff. So try it out, or not, whatever, we don't really need you, we all having a grand time. And once you see and use the G+ mobile app you will see just how awesome it really is.
The Facebook web and mobile apps are so lame and boring. I actually uninstalled the mobile app completely, waste of space. Pretty much only reason to keep my facebook account is to be included in events and those rare photos of friends I actually want to see. But I barely log in, if I get an email notification I go check it out.
Point is, stop trying to use G+ like Facebook, instead use it like twitter that happens to have a mindblowing interface, less restrictions, more content and stuff you actually want to see. I can see that eventually I can replace all my RSS feeds with just G+.
Anyway just my 2 cents, G+ is thriving, we all have a great laugh at the ghost town comments...
