Like Web 2.0 here is this Search 2.0. Search 2.0 is about the new generation of search engines. Traditionally a search engine uses a Boolean query and pre processed analysis information that gets back the result from the database and displays it as result. But Search 2.0 engines are different from traditional search. In that the actual search is done by an engine based on the contents of web sites, with the existing analysis about the site and combining the results from various other search engines. This is a powerful combination and the major advantage being the search operation is performed by one or more engines and aggregated. This article “Search 2.0 vs. Traditional Search” talks about the differences between the two and also lists out the Search 2.0 companies.