..crickets..

[Bob Comire]

I'm curious - how little personal info could you get away with giving and still join?

It's fairly benign and non-invasive, take a look at the sign up form If you don't have a Facebook account, you can sign up for one in a few steps:
Go to www.facebook.com.
If you see the signup form, fill out your name, email address or phone number, password, birthday and gender. If you don't see the form, click Sign Up, then fill out the form.
Click Sign Up.