The numbers are interesting, but interpreting it is hard. I noticed several non-tech people getting an G+ account, using it for some days, and leaving, because hardly anything was happening. That might be bad.

But the graphs mostly documents power users (g+-Twitter syncing), that might start to share some of there (less article-like) posts just with their circles, as the personal networks grow stronger and become more useful. That might be very good for G+.

After all, G+ cannot survive as a blogging platform.