Yeah I am liking this idea -- maybe be able to see people's MP favorites in their profiles, as a good starter.
I am trying to get people to use the web feed page on their profile more -- I have been using mine to promote my own new releases, but unless that becomes a common practice it is not as useful as it could be.
If the url of things people marked as their favorites in the MP could be linked to their web feed, that is another way that could be made extremely useful.
Especially if Lindens promoted it in their blogs : ))