Bored, I wrote such a system and now I can access it.
http://www.525qy.com/member/tys/friend/
Originally a contact list of old classmates old friends, static.
Later, I have always had an idea, making dynamics, let them go to update maintenance.
I have written this procedure, after writing, after writing, what I want to write, use the program of the classmates, I don't have it, I think it is really boring.