There are other sites with beautiful photography you may wish to visit on a daily or regular basis:
National Geographic: http://photography.nationalgeographic.com/photography/photo-of-the-day/
Some photo sites also offer contests with a chance for you to submit your own photos:
Earthshots:
http://www.earthshots.org/
Steve's Digicams:
http://www.steves-digicams.com/photo-of-the-day/
Daily Digital Photo:
http://www.dailydigitalphoto.com/cgi-bin/potd/potd.pl
Do you have a favorite photo site to share?