Wow Tom. I know a whole lot of people have already posted replies to your thread and I think its a good idea that you're trying to clean the site up a little bit. But changing it to NumaGrounds? The numanuma dance is a phase that will more than likely fade. Its not horrible, but people aren't going to be talking about it ten years from now like when All Your Base exploded.
I've been coming to Newgrounds for years now and I even remember all the small flash jokes on the mainpage that would run every minute or so. Thats the kind of stuff I liked newgrounds for. I understand you have to make a profit somehow, but newgrounds really isn't a place that most housewives are going to want to visit every day. And if you do change it to NumaGrounds and try to get those sorts of viewers, are you going to change all of your sponsoring to Avon and cooking supplies? I know if my mother came here and saw porn and hentai advertisments she'd be a little disturbed, whether it held her favorite flash or not.
Basically, I say screw the demograhpics and keep newgrounds for generation x. This is a great site already and although change is good, sometimes its not always the best.