Can I change my user name under my picture?

If I change my user name in Yahoo Messenger will my contacts have the old user name or the new Messenger name?

• I changed my user name in my Messenger. But will my old contacts be able to see the new user name or the old user name?

• Answer:

  the old user name will be see by them. future friends can see the new user name. better tell them to Edit your contact info in their buddy list.