Computer search engine software for use in capturing, cleansing and indexing content on intranets, extranets, and web sites, including databases and dynamically created data for search engine visibility, search engine optimization and search engine marketing that allows a user to perform searches of any type of document and/or data and that features user interface including key-word, Boolean and natural language search query options, automatic configuration for intranets, extranets, and web-sites and provision of statistical information regarding web-site page access, notification of stale and broken links in any file, ranking of search results based on relevance of all of the foregoing for use in any search application or information retrieval application and electronic commerce applications; electronic software updates, namely, downloadable computer software and associated data files for real-time updating of computer software in the fields of business to business, business to government, business to consumer, peer to peer, comparison shopping and auctions provided via computer and communication networks