As a premier destination for content, training, and advisory services dedicated to regulatory compliance, IT governance, and corporate risk management, ComplianceOnline is a model online community that delivers two million visitors annually to MetricStream's back door. Business-to-business (B2B) marketing professionals can learn that building a successful B2B community need not break the bank if they focus on three key lessons: Gather the best content, encourage the community to vet and contribute to it, and give members equal opportunity to engage with potential buyers who visit.