How do I use My Work view?

I just stumbled up on the "My Work" view.  I've "noticed" it before but never actually loaded and looked at it.  It's pretty cool!

The problem is, as far as I can tell there's really only one very short page[1] - that I can see, anyhow - on how it works.

There are a ton of forum questions on it, in my opinion indicating the interest people have in it.  Yes, it would be nice to be able to refine what shows up in the Inbox.

Anyhow, my question: is that one paragraph (below) really the only reference for this feature?  A few other questions I had I've sort of made assumptions to the answers based on forum responses, e.g.:

1.  Can Inbox content be filtered?  No.
2.  Can Inbox content span projects or iterations?  No.
3.  What does "accepting" inbox items do?  Still not sure of that, exactly, but haven't finished searching.
4.  Is My Work view being deprecated in deference to the web-based tool?

I just think this is a dandy little tool but seems like it's stuck in a corner.

[1] https://jazz.net/help-dev/clm/index.jsp?re=1&topic=/com.ibm.team.workitem.doc/topics/c_my_work_view.html&scope=null (not sure why the forum isn't let me insert that as a link)