12. The computer storage medium of claim 11 wherein the step of comparing the first sign and the third sign to the second sign includes determining whether each sign makes sense in a linguistic context.
12. The computer storage medium of claim 11 wherein the step of comparing the first sign and the third sign to the second sign includes determining whether each sign makes sense in a linguistic context. 13. The computer storage medium of claim 12 further including instructions for performing a step of acquiring user demographic information and comparing each match with the user demographic information to verify the accuracy of the match.