Small businesses are using social networks to become bigger

The Economist has a sweet little primer on social networking for small business this week. The piece has a couple of great case studies and identifies this critical success factor:

A survey of 1,000 heavy users of social networks and other digital media conducted in August 2009 by Razorfish, an advertising agency, found that 44% of those following brands on Twitter said they did so because of the exclusive deals the firms offered to users.

A special report on social networking: A peach of an opportunity | The Economist.