Yes you can change.
I discover it when I was adding someone to my friend list and on the second box it said to put their name or something that remind you that is them because they could easily change thier username and you might not know who they are but as long as you have their nickname or somethinf you'll remember that is them and they change their username lol wow this is long.
lol...thats like me and my cousin...even tho we are the same age and not really cousins(we say we are so that no one will think we are dating b/c she is way too good for me) I would do anything for her
Dr. Pepper?
is that right?