Blogs, social networking sites and other Web 2.0 functionalities have forever changed the consumer online experience. Now that these online communities are translating to the business world, they can be powerful tools for BtoB marketing. This on-demand Q&A roundtable features industry experts from Ogilvy Public Relations, Ning, SAP AG and Communispace. The panel members discuss their experiences with building online communities, and the potential applications for business-to-business marketing.