I’ll believe that Google+ is catching on when I can look at the “Nearby” circle and see content that’s newer than a day old.
I took the screenshot below a couple nights ago. It’s not like the Tri-Cities is the middle of nowhere. We have 253,000 people in the metropolitan area (2010 census). We have a fast-growing airport that’s served by four airlines. We’re the 4th-biggest metro area in Washington state.
And every time I check the “Nearby” circle on Google+, it’s a ghost town.