Did a user search for “Quidam” and it turned up no results - found a homepage and the “In Forum” search showed no comments and the last post in 1999 - is there more to your hint?
During the height of the Clinton impeachment process, Quidam was a poster who urged FReepers to trust the turtle, which was supposed to be the special prosecutor Starr, of whom he assured us, was being slow and methodical in his taking down of all the Clinton crimes and ridding us of that slimeball.
FR Class of '98 saw a lot of us signing up during that period to get a more truthful assessment of the process than the MSM was giving.