May I know what exactly makes you ask this question? Is it: Are you making some website which has similar functionality? or You want to know how images can be compressed in GNU/Linux environment? or You are just curious regarding the way Facebook works?
Regards, -- Tanay Mathpal Assistant Systems Engineer Tata Consultancy Services Chennai http://twitter.com/tanamania -- LUG@IITD - http://lug-iitd.org/Footer
