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that means people can keep sign-up new accounts to give them selfs Karma points….

i dont mean to sound like a prick __ck__ but can you whip up some sort of plugin for this problem or some instructions. becuase i wouldnt know where to start let alone code somthing like that.

EDIT: WordPress has it goin ok, I get the message:-

ERROR: This email is already registered, please choose another one.

when registering an already existing email.