For Sale By Owner is about buyers and sellers connecting. FSBO sites get crawled religiously by hungry Realtors, mortgage brokers, insurance agents, and other trade pros all prospecting the free seller leads to farm. Do it yourself sellers prime the pump. Water flows. Everyone drinks and links. Sellers love to sell and save. Buyers love to buy and save. Professionals love to help out so you can save. Advertisers love the link SEO and the eyeballs and are saved. I just love FSBOs.