Ross Mayfield discusses how businesses are using SlideShare, the top 200 website where professionals share presentations and documents, to engage customers and generate leads. He explains how businesses can create branded channels on SlideShare to communicate their message, engage with professionals in their industry, and leverage the sharing of content on the site for viral marketing. Businesses are also able to support their employees' use of SlideShare to build their own professional brands while also representing their company through SlideShare Networks.