We just can't live without them. They are the key to locating the wealth of information the Web already is. Search engines have become the most important piece of the Web's puzzle. The major search engines combined give us searchable access to the world's information and perhaps more information than we need, want or like. Learning about search, search engines and search engine algorithms is an important part of executing successful search engine marketing work. Alternative search engines are also important, even though they lack the size and speed of the large major search engines. Alternative search engines are often more targeted and serve target groups which can help you identifying the clients for your Web business and visitors to your Web site.