Table:Automatic banning of users based on format
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I have noticed that fake user accounts seems to be spewing up, that all match two different formats: [a-z0-9]{9} or [a-z]+[0-9]{4}. Which is to say that either is it a nickname of seven random alphanumeric characters or a random set of letters followed by four random numbers. Just check the user creation log.
As such, I have banned these two names. Although, this effectively means I have banned usernames of 9 characters in length, as I cannot figure out a regex that insures that both letters and numbers appear in the name. --Sviptalk 11:20, 5 July 2012 (CEST)