Giving my prominent proboscis a good hard tweak, a certain pseudonymous Scarlet Pimpernelesque semi-retired real estate weblogger asks: “Are you trying to say that the MLS’ are not fascist dictatorships???” The question refers to a weblog entry I posted last night chastising Trulia Blog for hyperbole in its complaints about MLS exclusivity. I actually have a lot, lot, lot to say about MLS disintermediation — but not now. For now, I’d like to take a swing at the issue Trulia raises, treating it more seriously than they did.
Here is the relevant rule from the Arizona Regional Multiple Listings Service’s IDX policies and procedures:
12. An IDX Broker may not modify, enhance or manipulate a Shared Listing. In addition, listing information from other sources may not be combined with IDX Listings. For instance, property listings from other multiple listing services, for sale by owner properties and properties not in the MLS may not be combined with the IDX Database.
Why would ARMLS have such a rule? I can offer some reasonable conjectures, but before I do, I should like to make a meta argument: Whether or not you agree with anything I might say, it remains that MLS systems have every right to make their own rules however they choose. If the rules make sense to the membership, they don’t have to make sense to you. In other words, quibbling with me, here, gets you nowhere.
So why might an MLS IDX system forbid commingling with listings from other sources?
How about to protect the MLS brand? Or to avoid confusion between fully-cooperating listings and de facto exclusive listings? How about to preserve the cooperative system that is the sine qua non of MLS listing?
Here’s an even better reason: To maintain the quality level of displayed listings. We make fun of MLS listing quality, but egregious listings are funny precisely because they stand out (which is what egregious means). MLS listings are amazingly detailed compared to FSBO or RealtyBot listings. The simplified ARMLS feed, which any agent can download on-line, contains 213 unique fields — and it excludes the photos, their captions, the virtual-tour link and Read more


