This a search engine constructed primarily for parents interested in shielding their surfing children from "adult content" (hate that term). You do not need to go through their categories before submission, but you are asked to select a category once you have begun. What is most important is that you must have a "PICs" labeled site before you can submit it. If you do not have such a label (which can be placed in your meta label section), the links in their submission explanation pages show you how to attain a label. It is somewhat time consuming, but for some sites may be worth it — not only for SurfSafely, but for many filtering systems.