unitone said:

Kayak travel search engine accused Microsoft Bing?s travel section of copying the Kayak user interface. Kayak contacted Microsoft and asked them to stop copying the UI because it's confusing Kayak users. http://www.wired.com/epicenter/2009/06//kayak-bing/ Bing travel: http://www.bing.com/travel/ Kayak: http://kayak.com/