How to hack Twitter’s registration (using gmail)

I wanted to create another Twitter account for my new project (@forefont) but Twitter’s registration process doesn’t allow would be users to register using an email address already in their records. So this is how I did it using Gmail.
Gmail, allows catchall email addresses i.e. my email address is aitoehigie {at} gmail {dot}com, but if you send an email to me at aito.e.higie {at} gmail {dot} com or any other combination, Gmail still delivers the email to me. Since I had used my correct email address to register my main Twitter account, I just used the combination above, and it was successful.
Try it.