Facebook now allows you to select which avatars or photos show up on your profiles as your "friends". This is a useful tool, particularly if you want to drive new traffic to one of your associates. Twitter however does not allow this. Isn't it about time that they did? Write to them and let them know you'd like this. I did. This is that tweet I wrote:
@Twitter Could you make it so I could select which avatars show up in my Twitter profile? Thanks. I would appreciate that.