Internet, segmentation and entertainment ... How does it really work ?

Hey guys , So the video I am sharing here is very interesting ( I am a huge fan of Tedtalks ) this one shows how the study of population has changed now thanks to social networks, so the media can target in a more precise way...the customers... Which means 'US' ... But also some other interesting facts... http://www.ted.com/talks/johanna_blakley_social_media_and_the_end_of_gender.html