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Redfin is attempting to do the right thing by creating a marketplace that contains all available residential real estate. It sounds like Redfin has the consumer in mind by offering a much broader selection of available real estate than what is in the MLS. More companies need to do the same. Of course, this is just one step to completing the task of putting all available real estate in one location. As Mr. O'Toole mentioned in his comment pre-foreclosures and auctions are missing. Also, I estimate that the FSBO websites mentioned in the article that are providing the FSBO data contain only about 15% of the nationwide FSBO market. The FSBO property owners who don't list their home on one of these sites will usually place an ad in their local paper. FSBO Leader researches newspapers throughout the country to find nearly every FSBO property. I hope that companies like Redfin will continue to make shopping for online real estate a better overall experience.