How do I change my Piczo nickname?

[Valma]

So, piczo has changed. It is now more like Twitter. Personally, I hate it, but it seems I'll need to adjust.
When I first logged in, it asked me to create a nickname for myself. ''It will make things simpler'' it said. But I thought it meant like a new username. Now I realize that this nickname is public and I want to change it. Could someone tell me how?
I'm so confused!

[Isis]

OH,
i hate it too
it's too slow!
& i think you can't change the unusername
that's sad,
i would like to do that too....