Weaknesses Very limited coverage of the web's contents. Little information about the sites on which to search, not deeply indexed. No focus, trying to cover all topics. A web site can be indexed under multiple subjects, there can be duplication of results. When to use them When you are just looking for a sampling of good sites on a broad topic.
Exercises Think of a fairly broad topic.
A Krishna temple is opening in town. Where can you go to find web sites about Hare Krishna. You want information about violence in middle and high schools. Find relevant web sites in Yahoo by browsing through the subject categories. Then do a search in the search box.