If you’re on Twitter, that means you registered an account with a password that isn’t terribly easy to guess. As you may know, Twitter prevents people from doing just that by indicating that certain passwords such as ‘password’ (cough cough) and ‘123456′ are too obvious to be picked.
It just so happens that Twitter has hard-coded all banned passwords on the sign-up page. All you need to do to retrieve the full list of unwelcome passwords is take a look at the source code of that page.