Search Tools – Information, Guides and News: Avi Rappoport runs this as an extension of his business, Search Tools Consulting. This site is the be-all and end-all of search engine information. Within the site, Avi lists about every search tool ever made, news about search engine technology, and dozens of other resources. There’s not much about search engines that you can’t find here. The site is simple, but well architected and easy to use.