Sorry I missed this when you first posted it. A couple of things to note about Views. First, if someone views the overview page of a Group or Space, the View is registered against the Container object (e.g. the Group). So if you expect a lot of folks are looking at the overview but not at specific content then you should include Views of those Containers. Second, note that when someone looks in their activity stream they see a variety of content items in the stream. Views are not registered against these unless the user clicks on "Show More" to expand the whole item.
I hope this helps.