A quick note on email addresses here - you may use any valid email address you choose. We have found that yahoo and gmail work particularly well. WBS will never require or request your own personal email address, though you may use it if you wish.
We *have* noticed that email addresses that are a total of more than 25 characters may choke due to the size of the field in the database, so shorter is better!
The chat options on the Registration page are explained in the Getting Started section, and may be changed after registration using the User Details button.
As a final note on Registration, when your confirmation email arrives, the best way to confirm your registration is by using the url in the confirmation email as opposed to using the code.