Hmm how are you sure of this?
I peaked at email addresses and did not find any that were identical. I didn't lay them out on a spreadsheet or anything but at initial look all email addresses appear to be different.
I won't delete accounts in case they are real accounts. At a later date I may remove old unverified accounts but I won't do that until they are older and likely to have forgotten they even bothered to register and even than I'll try and email them first. It wouldn't be fair to remove an account unless I were 100% sure it was a duplicate.
Cleaning up and maintenance will come at a time when this has been around longer and time warrants it. Have faith in the Admins... we will handle stuff as we deem fair.