Realtors, why do they make so much money?

Either way, their days are numbered. With new web apps squeezing the most out of data, individuals can do much better off without a realtor. Why do realtors (or their companies) get paid so much for doing so little? Look around at your options before signing with a Realtor. Looking to buy? Do it without a realtor and get 75% of the commission - http://www.buysiderealty.com | http://www.trulia.com | http://www.iggyshouse.com | http://www.housingmaps.com | http://www.zillow.com | Update: The Real Estate Bubble Commeth