Much of the SPAM I get uses misspelled words. This is probably so that the messages can pass through Bayesian filters because their words do not accurately match the words on the list. I would like a filter that marks all messages as SPAM if they go over a set threshold of spelling mistakes. I do have a few people in my address book who send me terribly misspelled messages. Maybe this would encourage them to spell correctly. Anyway, this is not really a hashed out SPAM filter plan or anything. It is simply something I was thinking about over lunch.