And while they're at it, how about signing Halo as well?
When you don't know at first what your costume is.
No personal information required.
You don't need an account to use the generator or browse around, but if you make one you can:
We tried to do it without accounts for a while, but a few people kept cheating and hacking and being rude.
It's completely free and we don't ask for any personal information so we can't spam you.
And while they're at it, how about signing Halo as well?