- Digital Root
- An interactive consulting agency that offers cutting edge solutions in the areas of business modeling, business development, brand management, web site project management, strategic marketing and PR, and media consulting.
- Tony Cooper's Marketing Madness
- From site construction to marketing your wares, and free newsletter.
- Business Models on the Web
- Comprehensive description of a wide variety of web business models with examples. Maintained by Dr. Michael Rappa at North Carolina State University.