We know how well the big sites in real estate (Realtor.com, Zillow, Trulia) rank in the search engines. And we are clear about the vast amount of traffic they receive. We also know that consumers are drawn to these sites first before drilling down to the local broker and agent sites. What we inside real estate know that most consumers may not is how many local listings are actually missing from these search sites. Jay Thompson digs a little deeper into this discussion in his post this week titled Where to search for homes online.