You do not have to have a site, but you must have a valid e-mail address (this can be hidden from general view).
You must also submit your country of residence.
If you do submit a site, you need to put up a code or a text link. If I check your site and the code isn't there, I will only list your name and e-mail address.
I will not link to your site, if it contains pornography, homophobia, any form of hate, if you direct-link, don't have a link back up or if your site contains anything illegal.
Please keep your information updated.