I have been using Stack Overflow and other Stack Exchange sites from a long time. Specifically in Stack Overflow, I have favorite questions which I want to refer later. The list is growing. It is difficult to find any particular favorite.
It would be nice if you allow user to define favorite categories and while clicking favorite, user can select the category under which the favorite to put.
If I want to see my favorite questions under asp.net-mvc, it should show all favorites in this tag.