Briefly ill say this.

After reading the rules in the forum and  taking consideration of what to do and what not. I have been wondering to ask this question.

What will happen to anew user's account if he wishes to change his username after some months in the forum?

If the user has achieved a high rank in the forum, and choses to change his username, will the account be suspected of changing hand and be tagged for that? If yes how will other users know he is still the rightful owner?