19. The computer system of claim 18 , further comprising: continuing to add identification of items to the universal query result set based on determined probabilities until a predetermined number of items have been listed.
19. The computer system of claim 18 , further comprising: continuing to add identification of items to the universal query result set based on determined probabilities until a predetermined number of items have been listed. 21. The computer system of claim 19 , further comprising: tracking a result of the transmitted universal query result set; and storing the tracked result and the query as a historical query.