Since last we checked in on who is using Google+ and how often, a trio of conflicting reports have been released, giving us an updated, though unclear view of the popularity of Google’s latest social project based on traffic and user estimates. Here’s a rundown of those reports, as well as other recent Google+ news.
http://searchenginewatch.com/article/2098915/Google-Usage-Traffic-Slows-as-Buzz-Dies-Down