Yes, we don't use a popup for registration at all because.. well... you already know.
We have 2 modes for registration:
* An automatic mode - User clicks Login with FB button and their Joomla/JomSocial account is automatically created, profile imported, and they are logged in. It's probably what you did on this site, assuming you logged in with Facebook. No forms, username is automatically created.. Easy.
* Full registration mode - User clicks button and is brought to a new page where they can login to an existing account (if they already registered through Joomla) or they can register. On the registration form, you can show extra fields from JomSocial that may not be imported as well.
It's your choice, but both definitely work. You can use (and play) with our demo site if you want to test both methods. The admin area is open to change the configuration as you wish:
demo.sourcecoast.com
Hope that helps. As always, we have a 30-day refund policy. If you aren't happy, no worries!
Best of luck,
Alex