You could post as a guest, years back and as such, there was no big reason to register. The only reason I registered was because you'd say something legitimate and it'd be negated because "a guest said it".
Getbig was wayy more harsh in those days - completely anonymous boards do that.
Whilst there are a lot of people, here who clearly "read" getbig, judging by the general lack of knowledge of getbig history (which isn't a particularly lofty height to reach, mind), I'd say, respectfully, they had basically nothing to do with the board up until recent times.