Nice article on copyrights

Its gotten alot easier to get a copyright than it used to be.  $35 and an online form now.  Article does a good job explaining copyrights and what you can do.  My 2 cents.  I would stick to the bottom concepts of embedding watermarks to slow folks down.  It can get expensive to copyright all your pictures.

http://www.makeuseof.com/tag/why-how-copyright-your-photos/