Scratch

Simple answer - It's not possible.
I'm sure I remember reading on another thread that it would be possible, but it would take AGES to do, because every single thing you've ever done would have to be changed. That's every comment, every project, every post, every favourite, and lots more. It would probably take a day at the very least for one change, and if everyone was requesting one, the Scratch Team would never be doing anything other than changing usernames. There are some other forums that I go on where you can change your username, but I won't be allowed to link to them as there's quite a lot of swears.

Mokat wrote:

Why would you want to change your username?

If, for example, you called yourself "HarryPotterFan123", and then later on in life, you thought:
"Why did I ever liked Harry Potter? It's rubbish."
Then you wouldn't really wanna keep the name "HarryPotterFan123".

I actually support and not support:
I dont support because:
-What if someone hacked your account and changed your username to something innapropiate?
I support because:
-Your name can get old
-You may not want your name and may wanna change it
-Its a very good idea!

Good idea though