I was hoping someone could suggest a matching engine that could be incorporated into an existing website. For example, Joe is looking for a house. Joe logs onto a website and enters the specifications of the house he's looking for. He's then "matched" with sellers of these homes (realtors, private sellers, etc). The difference between this process vs. "classifieds" is that "Joe" has to log into the site, and the sellers (realtors, etc) now have "Joe's information" thus a "lead." I know of a couple very expensive software solutions for these "matching" applications, but does anyone know of anything off hand? Thank you!!