- What is the MLS ?
The MLS (Multiple Listing System) is a database where all Realtors list properties for sale. By listing a property through the MLS the listing Broker is offering a commission to any Realtor that brings a buyer (or tenant). 

- Is it Possible to have my phone number on Realtor.com and other websites ?
Unfortunately Realtor.com, HomeSnap,  Zillow, Trulia  (and all other syndication partners) rules and regulations prohibit the publication of owners direct contact information on their website.