Whether you’re looking to sell or buy a home, you will no doubt encounter the multiple listing service, or MLS. The site and service are, in many ways, the very lifeblood of the real estate business.

Corrections & Clarifications: The story has been updated throughout to include, correct and clarify nuances of the industry and to correct an error. The National ...

The National Association of Realtors continues to loosen some rules that govern business norms in the residential real estate industry.