Here's 5 sites I believe every digital photographer should add to their bookmarks. I visit these sites on a weekly basis as they inspire, educate and allow me to be a better photographer.

Scott Kelby
Also known as the godfather of Photoshop. Scott's website is regularly updated and filled with generous advice from everything on how to be a better photographer to becoming an expert in Photoshop and Lightroom.  

Digital Photography Review
dpreview.com is the site to go for if you want to read the latest camera reviews. Phil Askey's reviews are incredibly detailed and second to none. The site is also always up to date with the latest in digital camera news.

Rob Galbraith
Another authority site covering the latest in the photography industry. Often includes detailed reports and reviews - a must read.

Strobist
David Hobby is another person that is very generous with his knowledge. As quoted from the website : "This website is about one thing: Learning how to use off-camera flash with your dSLR to take your photos to the next level."

The Travel Photographer
I visit here often for inspiration. The site features links to amazing travel and documentary photographers around the world.