VIDEO: How Google fine tunes its search engineSumi Das goes inside Google to see how the internet giant tests the usability of its search engine to ensure those using it get the best possible results.
Source: VIDEO: How Google fine tunes its search engine (http://news.bbc.co.uk/1/hi/programmes/click_online/9751991.stm#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa)