Oh I've tried it. It's not really as good as they claim, I reckon a good part of it is placebo.

By the way, the site is actually a collaboration between me and two others. Orangestar had put up some binaural beat files on his website, so cats4gold and I jokingly made this site in his name to promote them. And then it kinda grew fr m there.

If you enter the site, you'll notice it is not actually one site, but three linked together.