I would estimate that there are literally hundreds of thousands of guitar related websites on the Internet, with a few hundred popping up every month. While many of these sites will have something valuable to add, I tried to collect the best guitar websites, the ones that I think will be most useful to my guitar students.
Now this is nowhere a definitive list or guitar directory, but it's a good start. If you find a site that you think is innovative and worthy of being called one of the best guitar related sites on the net, than please leave a comment and if I agree, I'll add it to this list. Oh, and don't just spam comment links. If you don't explain why you think your proposed guitar site is awesome, I'll just delete your comment.
Instead of just presenting an insanely long list, I've separated the sites into categories to make everything easier to digest and find. Click on a category and you'll magically be taken to that part of the page.