Search Engine Watch - Comprehensive coverage of the search engine world. Reviews, forums, ratings, articles and frequent newsletters. Paid members receive access to extra content. [+]
ISEDB - Directory of directories and search engines worldwide, organized by subject and geographical area. Articles on marketing, site submission and optimization. [+]
Three Mice - Natural language answer engine, which queries the Internet in real time and serve up full text from selected sites. [+]
