Patent ID: 8868536

Claim:
A computer-implemented method comprising: receiving, by one or more computing devices, user input associated with a listing of a group of searchable listings, wherein each listing includes identifying information; identifying, by the one or more computing devices, a plurality of different key words in the identifying information of the listing; selecting, by the one or more computing devices, one or more pairs of key words from the plurality of key words; accessing, by the one or more computing devices, pair-wise correlation data, wherein the pair-wise correlation data relate to instances in which listings, from a set of listings, contain both key words from the selected pairs of key words; determining, by the one or more computing devices, a value that corresponds to a likelihood that the listing is not a spam listing, wherein the value is based, at least in part, on the accessed pair-wise correlation data; and in the event that the value does not exceed a threshold, removing, by the one or more computing devices, the listing from the group of searchable listings such that the listing is not provided as a result in response to a search.