Some Startups Forget to Validate a Business Model

Many entrepreneurs work hard on the proof of concept (technical), but skip any proof of the business model (revenue flow). In other words, once they are convinced that the product works, they assume their price, sales channel, and marketing will bring in the customers. These days, the technical side may be the easy part.

Martin Zwilling

Full Story: http://blog.startupprofessionals.com/2011/04/some-startups-forget-to-validate.html