Parent asked whether anyone actually uses Facebook as their sole communication medium. I&#x27;m saying yes, because there&#x27;s little reason to bother with anything else when everyone has Facebook (and can already find each other on it). And for the most part that&#x27;s true, in my experience. I&#x27;ve met exactly two people who don&#x27;t have Facebook; neither of them want to be contacted electronically at all. Never met someone in a peer group who wanted to IM but was morally opposed to Facebook in particular.<p>&gt; Either you care about contacting someone or you don&#x27;t.<p>Cuts both ways. If Facebook is someone&#x27;s primary communication system and you refuse to use it, then you don&#x27;t particularly care about contacting them either.<p>&gt;&quot;Overhead&quot; to contact someone?<p>Most groups of friends I&#x27;m aware of have running group chats. In an effort to be inclusive of people with Androids, many switched from iMessage to Facebook. But if you refused to use Facebook and an event was planned that way, yes, someone would have to make the effort to reach out to you individually. Overhead. Even if they really like you despite your self-righteous inconveniencing of everyone else, it&#x27;s not obvious whose responsibility it should be to bridge between Facebook and your smoke signals, and they&#x27;re likely to forget sometimes.