"Facebook Gangsta" is a transparent exercise in white guys parodying white guys parodying black guys. But note that there are no inside jokes about Beacon or shout-outs to Mark Zuckerberg. Just as Facebook is jumping the shark in Silicon Valley, it's crossing over into the mainstream, and displacing MySpace as a place for dating, mating, and relating. What this video really tells us: Zuckerberg's highbrow, Harvard-born creation is set to become just as ubiquitous, and just as stupid, as its social-networking rival.