RealEstate.com back as referral network

More than 150 MLSs providing IDX feeds with data on 1.6 million listings

Market Leader Inc. is back in the real estate lead generation business with a vengeance.

Known as HouseValues before rebranding in 2008, Market Leader spent several years transitioning from a seller of leads generated by sites like HouseValues.com into a provider of "software as a service" marketing tools and customized websites for agents and brokers.