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I am trying to parse through a large number of names that might have duplicate accounts mapped to the same (login)name. I need to go through and send a notice to those people that they need to cancel one or more of those accounts. (People were forgetting login names and making new accounts -- I just added a 'remember me' for login, so this won't happen again). If nothing is available for SO, I was going to just go
the flat file route. Any advice?