I mainly get high before having sex, really enhances the experience. Haven't noticed any effects to my hacking but there's no way to do a controlled experience, is there?
Hacker News is where the literate, success/money-minded bright people come. Perhaps this is elitist, but I'd bet that this community is thinner, richer, and more socially capable than most communities online. Probably younger as well, since there's the whole core of high school/college YC wannabes, myself included.