on NUMBER september NUMBER tim peters said would people be interested in the script i d be happy to extricate it from my local modules and check it into cvs sure i think it s relevant but maybe for another purpose paul svensson is thinking harder about real people wink than the rest of us and he may be able to get use out of approaches that identify closely related spam for example some amount of spam is going to end up in the ham training data in real life use and any sort of similarity score to a piece of known spam may be an aid in finding and purging it otoh look into dcc distributed checksum clearinghouse URL which uses fuzzy checksums it s quite likely that dcc s checksumming scheme is better than something any of us would throw together for personal use no offense skip but i have no personal experience of it greg greg ward gward python net URL if it can t be expressed in figures it is not science it is opinion 