I registered on the FAA Small Unmanned Aircraft System (sUAS) Registration Site on 12/28 and have yet to get anything from the FAA by mail.

Did I read the site wrong and you have to print the "card" out? I do not have a working printer at this time and would hate to have to buy one just to print the "card" out.

Anyone else still waiting?

Nothing here about getting anything in the mail:
Q40. What should I expect once I complete my registration on the UAS website?

A. You will receive a unique registration number that applies to any and all UAS that you own. You must mark all of your UAS with the unique registration number before operating. A registration certificate that contains the unique FAA registration number, the issue and expiration dates, and the name of the certificate holder will be sent to your email address immediately.

Q41. How do I prove I am registered?

A. A certificate of registration will be available to download and will be sent to your email address at the time of registration. When operating your UAS you must be able to present the certificate in either print or electronic format if asked for proof of registration.

Q42. Do I have to have a printout of my certificate with me?

A. No. If you are asked to show your certificate of registration, you can show it electronically. You do not have to print the certificate.

I would have sworn that said "and will be sent to your address at the time of registration" when I read that.
Thanks!

Haven't done it yet but its my understanding they give you a number that you use on all your drones.