To submit to this extensive directory, visit the "submit" page indicated. Then look through their catalogue of sites by choosing a letter at the top. Under each letter, you will find a wide variety of categories. Each one has an About guide attached to it. Click on the guide's name. Then send an email to the guide for the category in which you are interested. The guide will make the decision on your inclusion. This seems like a cumbersome process, but it personalizes it, and if you have an excellent site in the guide's opinion you may get a better place in its directory than would be normally possible through a free submission.