A computer search system compares search results received for searches falling within a defined parameter envelope used for grouping search requests. The parameter envelope may be defined by various parameters, for example, time of search, origin or search request, language, or other non-keyword data associated with each search request, excluding keywords used to define the search. Each new search result (comprising a list of search hits) for incoming search requests is compared to stored search results for search requests within the same parameter envelope. Search results that are found to be similar based on a pre-defined similarity measure are provided as related search results responsive to the incoming search requests. A client-side pseudo-browsing application may control interactions with the search engine, collecting true browsing input from the client and providing pseudo-browsing information to the search engine or other information provider.