[streety]

For the login you ask for an email address. There are plenty of services providing disposable email addresses but I wonder if you need to ask for an email at all. Perhaps an 'Alias' field would be more in keeping with the ethos of the site.

[lowglow]

The email field will take any string. Only enter your email if you want access to alerts, updates, and recovery tools -- otherwise you can just use some random handle.