I meet a lot of business owners who are not using social media and are not sure if it is worth their time investment. I came across an article posted on Inc.com which states one in three business owners say that social media helps them to close business. This is based on the 2010 Social Media Industry report, which surveyed 1,898 small business owners.
I would have to agree that when used properly you can close more business and at the same time expose your business to a large number of potential customers. Of course, as with any tool, you have to make sure you are using social media properly in order to accomplish this. You can read the Inc.com article here: Why Social Media Really Is Worth Your Time