20. The computer-readable storage medium of claim 19 , comprising further instructions that, when executed, cause a system to re-rank the ranked individual search results based on the sub-ranking component results.
20. The computer-readable storage medium of claim 19 , comprising further instructions that, when executed, cause a system to re-rank the ranked individual search results based on the sub-ranking component results. 21. The computer-readable storage medium of claim 20 , comprising further instructions that, when executed, cause a system to return the re-ranked individual search results to a requesting device.