19. The system of claim 13 , wherein the listing includes listing specification information and wherein the operations further comprising identifying the listing as matched based on a comparison of the specification information with the listing specification information.
19. The system of claim 13 , wherein the listing includes listing specification information and wherein the operations further comprising identifying the listing as matched based on a comparison of the specification information with the listing specification information. 20. The system of claim 19 , wherein the part is being presented as compatible via the first specification by presenting the at least one compatibility keyword from the first query with the first listing.