What's your point? The same can be said with regards to oral communication.
People who communicate in sign language do so in a very expressive way, a way that pure text cannot capture. You should go out of your way to experience this for yourself.
There are plenty of examples of alternatives to gmail that are more privacy friendly. You can have your email hosted pretty much anywhere, and still be able to email anyone else.
But similar alternatives to facebook, twitter, etc., are not as available.