From Newspaper Advertising revenue to third party recruiter's fees, the potential dollar value of the market is outrageous. The cost of effectively starting a web based recruiting effort is much higher than most expect. It is significantly lower than the alternatives. They also bring inherent weaknesses, rooted in their experience. Technology enables the fusion of competing entities in the interest of profit and improved capability.
Success is dependent on absorbing values and skills from an entire food chain.
It's a difficult task. In this kind of environment, failure is much more likely than a graceful success. Biting off more than you can chew is a significant risk. Career Avenue deserves some small applause for the willingness to enter the shark tank. Unfortunately, HR professionals aren't inherently good at graphic presentation or information architecture.