Getting the most exposure for your home or property should be one of your top concerns when choosing a real estate agent to represent you. More than 90% of buyers search the internet before they choose a home that they would like to see, and your home should show up on all the major web sites.
When you choose an agent that is a member of a Multiple Listing Service, you can rest assured that all of the agents in that MLS will have access to information on your home. Multiple Listing Services also offer the ability for agents and brokers to feed the listings to their own branded websites, which most do. For example, if you were to go to www.cbgreatlakes.com you will find homes that are listed by Coldwell Banker as well as many other companies.
Unfortunately, listing agents and brokers have the ability to decline your home from feeding to other websites including Realtor.com, Trulia, Zillow, realestateone.com, remax.com, etc.
Companies that decline the feed from the MLS might send information on your home to other websites by feeding the listings from their company website. Your listing might be included on Trulia, Zillow, Realtor.com, etc., but it is not likely to be included on ReMax.com, Coldwell Banker.com, Realestateone.com, Century21.com, or other branded sites except for the company that has listed the home.
Ask your real estate agent if their company limits or declines the feeds from the Multiple Listing Service. If they do, ask them to make an exception or list your home with a company that will won't handicap the marketability by your home.