the twitter-based login/registration seems to be a little strange. Here is a scenario:
Create new account, then click on twitter -> popup, twitter confirmation -> redirect to a page called Create new account
This page has fields for username, name and email and provides two buttons: Create new account and Login.
This is a littel misleading, since login doesn’t make sense at this point - the only thing that works is “Create new account”.
If there is any chance - please provide a better description in the dialog or disable the wrong button, please.