The CEO’s Guide to Social Networks
Social Networks
Social networks aren’t just for teens anymore. Executives and companies are increasingly using online social networks for a wide range of activities including recruiting, branding,
advertising, sales, business development, market research and customer service. There are a number of social networks designed for executives, including LinkedIn, Ryze, OpenBC and Ecademy. Other firms are creating their own social networks to keep in contact with both company alumni and customers
Listen with 
Alternates to iTunes:
Download the episode directly or grab the feed for your podcast reader.
http://www.businessweek.com/mediacenter/podcasts/guide_to_tech/guidetotech_09_11_06.htm
Filed under: Web 2.0
i think that social networks are positive for businesses, but i can see how it can be negative as well. who would be able to set the standard of business social networks, so that it does not lose its purpose?