I'm just taking a guess here
but since the drinking age dropped down from 21, didn't that kind of put an end to the "underage" scene?
I know that YBR and Spectrum etc are popular (and from what I've heard really good), but surely the numbers now are greatly decreased from what they were? Therefore interest in a forum such as this also decreased?
So with the underage scene now being people under 18, rather than under 21, surely most people under the age of 18 don't give a shite about dance music or raves? They're more interested in getting drunk with their mates and causing havoc. I'm aware thats a mass generalisation, but thats kind of how I see it, based on the people I know (such as my sister) who fall in to that bracket.
So based on that, I feel you'd need to do something pretty drastic to get interest in a forum like this up again?
Now please don't get me wrong, I'm not taking a shot at the Sub 20 forum, but thats just how I see it