Thank you for pointing out the obvious. Facebook didn't need to be parodied in 2006, because it hadn't become as ubiquitous in people's lives until now. It's literally enveloped the web and become at times, the primary medium of communication for individuals.

I really wish…
…that whoever is adding your reviews to Wikipedia (or if you are) would stop. It's great that you always feel the need to express your opinion about South Park episodes, but unfortunately, it's very predictable.