Realtor.com®, the official site of the National Association of REALTORS®, is the leading homes for sale Web site, offering more listings and essential real estate-related information, to over 40 million consumers each month. [1] Realtor.com® displays home listings from more than 800 Multiple Listing Services (MLS) [3] across the U.S., resulting in a database over 4 million existing homes available for sale or rent. Approximately 80% of all listings found on realtor.com® are updated every 15 minutes and the remainder are updated every one to 24 hours. This provides consumers with the freshest listing information and content available online.