Spell checkers and Morphological Analysis
Current search engines are utilizing morphological analyzers in their code and are very interesting to discuss about. In this typo example Google “understands” that Geoge Bush is equal to George Bush, see number 2 below. This is exactly what Morphological Analysis is all about . It also found a page with the typo itself. In few days search engines will show you this page as well 
Spell checkers today are very powerful and include morphological analyzers themselves, but leave it to the users to decide and select how to continue when morphological problem occur. However the paid search engines (Google AdWords, Yahoo Overture, etc.) have to make automatic spontaneous decisions and absolutely utilize embed morphological analyzers.