Simon Porter discusses how social media can be used effectively for business purposes. He notes that business customers now demand instant access and service. A study found that 69% of B2B buyers use social networks for business networking and development. Porter emphasizes that social business is about engagement, not just broadcasting. He outlines how to effectively use various social media platforms like Twitter, LinkedIn, and blogs to engage customers, build expertise and credibility, and track return on investment from social media activities.