Because that's not the browser job. Facebook, Twitter maybe are de-facto standards for some stuff, but by no means we should mark, use them as is it. Let peopl

Because that's not the browser job. Facebook, Twitter maybe are de-facto standards for some stuff, but by no means we should mark, use them as is it. Let people use what they want. If you want fonts with symbols, you get system ones. @font-face will be the answer and the real freedom.