I didn't mean to be presmtpuous. I think you are right that user interfaces can do a good job with crossposts. Here's a great example from GMane.
http://mid.gmane.org/20120323220013.0b1c8...@resist.wooz.org >32 bytes too long? Thirty-two characters means 50% likely to have a single collision once the archival database hits approximately 1.4 septillion messages. >Is 4 bytes too short? Four characters is only about a million combinations. First collision is 50% likely at 1200 messages, and multi-million message databases are completely screwed. Bottom line: how big a database do we expect to have, and amongst those messages, how many collisions are considered acceptable? -Jeff PS. These numbers assume a well balanced hash. This paper suggests SHA-1 is pretty good in non-adversarial situations, but I'm not an expert. http://cseweb.ucsd.edu/~mihir/papers/balance.html _______________________________________________ Mailman-Developers mailing list Mailman-Developers@python.org http://mail.python.org/mailman/listinfo/mailman-developers Mailman FAQ: http://wiki.list.org/x/AgA3 Searchable Archives: http://www.mail-archive.com/mailman-developers%40python.org/ Unsubscribe: http://mail.python.org/mailman/options/mailman-developers/archive%40jab.org Security Policy: http://wiki.list.org/x/QIA9