http://www.microsoft.com/business/casestudies/b2c/mtc_4sure.asp
Using SQL Server 2000, 4SURE.com improved their search capability to accurately cover 100 percent of their catalog, where previously they could only cover 70 to 80 percent of their SKUs. SQL Server's Full Text Search capability enables site visitors to search by partial word and partial part number, enhancing search results by an estimated 100 percent hit rate. SQL Server also provides a better solution for SKU latency, so product additions and price changes can be reflected immediately, rather than the 24 hours required with their previous application. Performance of the search engine is also improved using a search caching technique developed by 4SURE.com and Microsoft engineers, which caches search results in SQL Server tables, dynamically created for the user session. This caching provides 4SURE.com's users with a 30 percent improvement in ASP requests per second.