I totally agree with you, the lead buyers will find good leads in a Lead Exchange. Other than the big buyers, Lead Exchanges are more flexible to the small buyers, which are buying small volume of leads, but all together are covering a good portion of the volume of leads produced – buyers and sellers happy. If a Lead-gen/Exchange know the basics of customer acquisition and more importantly the importance of web monetization, will have a continuous flow of leads and business going through their Marketplace.