Google Directory
Google is primarily known as a search engine, but it offers good browsing, too. You search Google with keywords, and you browse topical categories in the Google Directory. (You may also use keywords in the directory, in which case all results come from directory listings.) Searching is for when you know what you’re after; browsing is for when you’re in a less demanding mood. Searching is like going to the store for a gallon of milk; browsing is like strolling through town looking in all the windows.
Google Directory represents a landmark achievement in human cooperation and virtual cataloguing. Google takes its basic listings from the Open Directory Project database, a large volunteer organization determined to assemble the largest and most useful classified index of Web sites. More than twenty thousand real-life editors evaluate and select Web sites for this project, which was started in 1998. Listings created by Open Directory Project are used by certain other Web directory sites, including Google Directory (as well as Lycos, AOL Search, Netscape Search, and HotBot). Google takes Open Directory as a kind of raw ingredient, and cooks it by adding PageRank formulas. The result is an enhanced directory experience.