Friendslist Folders would be a great new addition to the Communicate > Contacts > Friends window. Essentially a player's Friendslist would be presented similarly to the Inventory window, with the ability to add friends to folders. These folders should be customizable so that they can display any name desired and not be limited to an amount of friends listed in it. Also, friends should be able to be placed under multiple files.
This feature is very handy for players with a long friendslist, or players who add other players to their list for more than social reasons. Some examples of possible folder names are: Family, Co-Workers, Models, Vendors, Renters, Tiny Empires, Scripters, ect...
If you think this is a good idea, please take the time to voice your opinions, concerns, or suggestions.