Acquia – a commercial enterprise founded by the Drupal project leader (Dries Buytaert) to provide essential community modules, enterprise-grade support, expertise, and services on top of their free core Drupal offering – has released a new whitepaper that compares the total cost of ownership for Open Source Social Publishing over proprietary Content Management systems, Social Business alternatives, and other community building software programs. You can download the whitepaper for free (upon registration) at the hyperlink above. Read on for a broad overview of the findings.