According to the National Association of Realtos (NAR) at least half of all home sales involve a Listing Agent and a Buyer's Agent. Most of house sales originate through the local Multiple Listing Service (MLS). About 70 percent of today's homebuyers start their search for a home on www.realtor.com .. a nationwide listing of homes for sale. The NAR's Profile of Home Buyers and Sellers also show that in 2006 24% of home buyers ound their home on the internet while only 2% did so in 1997. The internet is clearly gaining popularity among homebuyers.