21. The medium of claim 20 , wherein the program instructions, when executed by the computer, cause the computer to further perform associating the two or more of the plurality of files, based on establishing that the determined similarity exceeds a quantitative threshold.
21. The medium of claim 20 , wherein the program instructions, when executed by the computer, cause the computer to further perform associating the two or more of the plurality of files, based on establishing that the determined similarity exceeds a quantitative threshold. 24. The medium of claim 21 , wherein said associating comprises tagging the two or more of the plurality of files.