How advertising is changing because of the personal info that advertisers can get through social networking sites:
http://www.techcrunch.com/2009/11/01/how-to-spam-facebook-like-a-pro-an-insiders-confession/
How advertising is changing because of the personal info that advertisers can get through social networking sites:
http://www.techcrunch.com/2009/11/01/how-to-spam-facebook-like-a-pro-an-insiders-confession/
Interesting article about how use of free apps on iPhone goes down rapidly. So advertising does not make that much sense to monetize social apps.