yum guides/docs/explanations

Hi Folks,
 Just wanted to mention some yum guides/docs that we've written up 

http://yum.baseurl.org/wiki/Guides


and I wanted to ask if there is anything specific that you would like to
have explained in yum. 

like this explanation of how yum compares providers:
 http://yum.baseurl.org/wiki/CompareProviders

If there is something in particular you're curious/confused about - let
me know and I'll see if I can draft up some explanation.

thanks,
-sv