Any pot smoker will be familiar with the flood of "great ideas" that come up while you're very high. And we all know that these ideas tend to appear kinda silly the next day, when you're sober again. However, some of the ideas can be pretty good, even from a rational perspective, which is why some folks have set up a website where you can submit your best ideas (before you forget them!), and vote on the ideas of others.
As psychedelic explorer Terence McKenna once said: "the greatest good you can do is to bring back a new idea, because our world is endangered by the absence of good ideas."
Admittedly, the ideas at highDEAS are probably not gonna save the world, but it sure is fun reading them!