Facebook: Personal Branding Made Easy (Wired)

Every time you post something on Twitter, Facebook, Tumblr, or Instagram, you’re influencing—or trying to influence—how the world views you. Each carefully crafted 140-character message that goes out into the metaverse fills a publicly accessible database that defines you to people you’ve never met. In the end, it isn’t who you really are. It’s the hilarious, adorable, fascinating, intelligent, so-worth-Friending version of you. Social media isn’t about having a conversation with people you know. It’s about advertising yourself. It’s not social; it’s media.

http://www.wired.com/magazine/2011/07/friendship_limits/