Chat roulette is a terrific idea for a web-site. Spin the wheel, meet a stranger. Instant intimacy, like an interesting seat-mate on a train or plane. Only the most curmudgeonly wouldn't occasionally want such chats with strangers from someplace else.
But "ChatRoulette," the current web-fad grabbing headlines, as well as Jon Stewart's satiric attention? Well, sad to say, the site is really dumb. It's only saving grace, besides serving as fodder for Stewart's hilarious bit, is that the site is dumb in psychologically interesting ways.