WRC News 4 At 4 February 1, 2012
trove for advertisers. virtually no other website can claim so many people are coming to it and staying so long. >> part of the appeal of facebook is that they have really detailed information on who's using the service, every time you interact with facebook, you leave a kind of digital fingerprint. >> reporter: a digital fingerprint providing valuable information for marketers, which is why the ipo is expected to easily raise the $5 billion in cash facebook says it needs to enhance and expand. generally, it is institutional investors who benefit from any ipo. >> the tough thing abou...