Spider View is a search tool that enables a website marketer or webmaster to view any URL as it would be viewed by major search engines (not as it is viewed by a typical Internet search). This is a way of testing what may be right or wrong about a site in order to optimize it to increase popularity. Spiders, bots, and crawlers are programs that harvest information for search engines such as Google, MSN, and Yahoo to help them in determining a site's page rank (PR) and subsequent placement in SERP (search engine results pages).