o.k., everything what is on tab "posting" should be also included in tab "recent activities" plus even more? is that correct?
The reason why I am asking is, I have an addon (xengallery) and I just realized that postings in xengallery only show up in the userprofile in the tab of "recent activity" but not in the tab "postings". Also the post count does not increase. So I guess this is a tiny bug that can be fixed by the developer.