Very likely the most popular source for information and in-depth reviews of digital SLRs. Also has user forums, user galleries, and photographic challenges.

A whole bunch of articles on photography ranging from equipment to technique and everything in between. I have an article posted there (search for Pentax).

A photographic challenge site with all sorts of competitions. A great source for inspiration and improving your skills against some pretty terrific shooters.

Great question and answer site for photography enthusiasts.

Do-it-yourself! Lots of great articles on building your own equipment, especially studio type stuff. A great source for saving lots of money.

Another DIY site with lots of great info, especially around the display of your work.

Tutorial and inspiration site, lots of great stuff.