The first instance of this clever name for me appeared: here, on September 15, 2009 8:55 PM (AmPow Blog time)
Explanation: The words in this Wordie list--"not my screen name"--are all accidental or intentional misspellings or misuses of my screen name, repsac3.
(The ones that include this comment are silly ad hominem attacks by the college professor named above. Where possible, I have included a link to his use of the word, in context. I'm sorry for any confusion that may've resulted from my earliest uses of this comment, but to me, it all seemed self-evident.)