On Webmaster Central Channel on YouTube ,Matt Cutts answer one question which is: “Why do Amazon.com pages tend to rank well for product queries?Search for a physical product usually ranks Amazon #1, even though it may not provide the best user experience. What is being done to prevent large corporations from dominating search engine results? Steve K, Pennsylvania†Here is Matt Cutts Answer: [video=youtube;IWHlVEiX_MY]http://www.youtube.com/watch?v=IWHlVEiX_MY&feature=player_embedded[/video] According to my practical experience’s domain authority,link popularity,end user satisfaction(including review,social metrics) are key determinant’s for successful product page on Google search. Published By Anirban Das,Zebra Techies, India