I remember hearing about them, never bothered with them though because the arcade machines said that winners don't use drugs.
I mean, that really just depends whether or not you really care what others think about your screen name and its "reputation." I guess it also depends on if you identify with your screen name or believe yourself to have some claim to ownership over it.
Personally, I don't believe that online reputation matters in the slightest or that an account name is any actual signifier of who a person is.