An anonymous reader writes "Google+ is a lonely place. At least according to a new study that paints the social networking site as a virtual tumbleweed town. Using information culled from the public timelines of 40,000 randomly selected members, data analysis firm RJMetrics found that the Google+ population, which currently numbers 170 million, is largely disengaged, with user activity rapidly decaying—at least when it comes to public posts. According to RJMetrics, 30 percent of first-time Google+ public posters don't post again. Of those who make five public posts, only 15 percent post again. The average time lapse between posts is 12 days, and RJMetrics cites a cohort analysis showing that members tend to make fewer public posts with each successive month. And the response to public posts on Google+ is extremely weak. The average post receives fewer than one reply, fewer than one '+1' (the equivalent to Facebook's 'Like'), and fewer than one re-share — basically most posts in the study did not garner any response."