Statistics for Google+ Communities
Communities launched yesterday and (even though they didn't announce it officially yet) they are also very well supported in the API already.
This enabled me to expand All my + to allow you to analyse the activities inside of public communities.
For example you can check the People
report to see who are the most active posters in your community. Or you can check Charts
to see at what times the community is most active. Or maybe you just want to have a look at all the Photos
posted in your community.
Just take the ID or URL of a community and paste it into the input field at http://www.allmyplus.com/
as you would normally do for a profile.
Here an example of the already very active Google+ Discuss community:http://www.allmyplus.com/u/115758385206378551362