Check out any number of tumblr blogs. People of Wal-Mart. Look at That Fucking Hipster, etc.
Or a very, very large section of /r/pics or /r/funny on Reddit.
Even ignoring the extreme cases like /r/creepshots, the Internet has already proven that it greatly enjoys taking pictures of strangers in everyday life and mocking them mercilessly.
People would like to go around with their fly accidentally undone and not have a bunch of armchair comedians commenting on their junk. People would like to go around on a bad hair day without it being picked apart by screeching Internet fashionistas. Our fear of being spread all around the internet is grounded in past instances of nobodies being spread all around the internet.