Personally I was a bit skeptical about the use of social networking for small business promotion. Initially I thought that seems a lot of work to chase a little bit of web visitors and traffic. Of course I was thinking about it the wrong way. I was thinking of using it to get visitors to your site and buy your products or use your services - well you might be able to do that but I think Facebook is useful for something else. If Facebook might not drive web traffic to your site, it can do something much more useful - it can build trust!