However, this can actually be advantageous to the user. As with all things human, each directory is unique, with its own set of advantages and disadvantages. Which one is best for you is a personal preference, but we will point out some of the better ones. We will categorize subject directories by the amount of human intervention. The categories are subject catalogs, annotated directories, and subject guides.
Users look in the catalog under the subject heading that they are interested in and find resources.
It is then annotated to give the user a more detailed idea of what the resource is, and, in some cases, rated based on an established set of criteria. Implicit in the notion of a guide is that its resources will be of high quality because of the amount of filtering and the level of expertise of its author. Having a set of these guides at one site would give users the highest level of filtering and analysis, and thus the highest quality resources. Eight directories that fall into these categories are old Internet veterans, well established and respected. Looking at them categorized will help users decide which one to use.