Google+ has a big problem... Google changed something recently that is really messing up the "Nearby" stream on mobile devices. Before you could look at "Nearby" and see what other people on G+ were doing nearby which was pretty cool and a different way to connect to other people. It was a very unique and distinguishing feature of G+ and one I have used often.
Recently though, any reference from anywhere on the planet made to something nearby is all-of-a-sudden included in "Nearby". So if you live near Cleveland like I do, any post that references the Rock-n-Roll Hall of Fame (and there are many) also ends up as "Nearby". Any post written about the Cleveland Clinic also ends up in nearby. Spammers and SEO hacks have also figured out that you can post about an area and that too will end up in the "nearby" stream.
At first I just began blocking those sites that had no actual nearby connection but now it accounts for over 75% of the posts that end up "nearby" and there's just not enough time in the day to block all those accounts. I imagine the same is true for others and it makes G+ much, much less useful.
And while I'm complaining... Anyone else notice the dental office, plumber and garage door spam accounts? Also... Why do realtors and headhunters think every social network is their playground to post job listings and houses for sale? So much noise.