You work hard on your G+ posts, ever wonder how “successful” they are? Here is a utility that gives you stats on your G+ posts: https://www.foldedsoft.at/+/allmy+/
It shows the total # of posts, the average number of comments, +1s and shares.
It also shows the # of videos, images & links you’ve shared. Also, these sorts of stats may be the info that’s driving rankings in this semi-new service plusclout.com
(I think it launched a week ago) Plusclout tries to indicate who has the most “clout” on G+ (much like Klout.com) Both utilities are worth checking out.