Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Uploaded on Apr 22, 2010
Pulkit Agrawal in Ahmedabad, India asks: "Can you please tell us: a) How many changes did Google make to their primary search algorithm in 2009 till date? b) Is content still the king or something else (structure) has taken over? This is some big buzz in the Internet community."