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Internet Data Exchange (IDX)

ATTENTION ALL CDS/IDX VENDORS AND MEMBERS WITH CDS/IDX WEBSITES
CMLS is implementing major changes to its Carolina Data Share (CDS) and Internet Data Exchange (IDX) programs. Please distribute the CMLS IDX Memo to all CDS or IDX vendors, and all CMLS members with CDS or IDX web sites.

Since 2001, CMLS has offered its own Participants and Subscribers the ability to display on the Internet MLS active-listing information through a program called internet Data Exchange (IDX).  Through IDX, Participants permit other Participants and Subscribers to advertise their active listings on one another's websites. Participants may include their listings in the IDX database without having their own websites. If a Participant chooses not to participate, his or her firm's listings cannot be displayed on any other member's website.

Brokers who participate in IDX can have websites with the most comprehensive selection of active real-estate listing information, and their listings are exposed on the websites of other brokers. Broker websites can effectively compete with websites of national aggregators as comprehensive sources of listing information. 

IDX only applies to websites that display listings obtained via the IDX data fees. IDX does not apply to print advertising or to listings posted online on Craigslist or social media websites, such as Facebook or Twitter. Non-IDX display of listings is addressed in an article titled "Get permission first. Just because a listing is in the MLS doesn't mean you can post it online."


Additional Information 

CMLS IDX Memo
CMLS Online Participant/Subscriber Agreement for IDX/VOW Services
CMLS Online Consultant/AVP Agreement for IDX/VOW Services
IDX Vendor list
IDX Web site list
IDX Logo and Map Display Policy  
CMLS Rules for IDX, VOW and Internet Display of Sold Data
Use of "Special Conditions" Field on IDX Websites