The search engine offers advanced search capabilities that go far beyond many other search engines. Alta Vista also allows you to search Usenet newsgroup posts in addition to web pages. In contrast to many other search services, Alta Vista's online documentation is very good. Lycos maintains a very large database of URLs and indexed web documents, but indexes only the most significant parts of a web page, such as title, headings, links, and text close to the top of the document. The search engine offers some advanced search features and Lycos' documentation of these features is fairly good.
Relevance is in part based on site popularity.
Advances search features and a subject-based guide to the web are also available. Excite is a comprehensive site indexing more than 50 million web pages and 10,000 newsgroups. Also, Excite provides access to 50,000 web site reviews. HotBot is one of the faster search engines on the web. It indexes more than 10,000,000 web pages and allows for both simple and advances searching.