Simon Rutgers from PeopleSoft forwarded me this link of the KartOO metasearch engine which renders results as a visual interface. The algorithm of KartOO launches the query to a set of search engines, gathers the results, compiles them and represents them in a series of interactive maps. It is an interesting visual way of displaying search results.
Here is a related visual search by Anacubis which uses the Google Search API to render search results visually.