Google+ has become one year and a lot of articles have been written from strong growth to failure. The article about the jubilee is clarifying this question by stating 250 million members. Most of these, so another statement, are accessing the service on mobile devices meaning tablet computers and smartphones in this case.
The jubilee is accompanied by the launch and announcement of new features. These are events and the announcement of new features to integrate Google+ within mobile apps with the latter being announced just a couple of days after the the post about the jubilee. The event function of course again is an interesting feature to compare Google+ and Facebook rising the question again who does it better.
+1 (the minimalistic title of the post about the jubilee)