A proposal for 'MLS 5.0'

Multiple listing services are not dead or irrelevant, real estate real estate technology industry guru Saul Klein says in a paper released this week, though they must evolve to embrace Web 2.0 ideals and expand beyond for-sale listing information to encompass parcel-based information.

It's not an entirely new concept for the real estate industry. Third-party sites such as Zillow and Cyberhomes, among others, already provide a range of information on tens of millions of U.S. homes at free public Web sites.

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