Well people know they can generally get more information from Zillow then Realtor.com. I don't know about yahoo. As Realtor.com charges the agents extra to put the full information of a listing online. Most agents don't want to pay out that. I have yet to meet someone that actually uses Realtor.com to search for homes. Most home buyers don't like Realtor.com. Though I have met some Realtors that use realtor.com to search for houses strange as that may sound.
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