But .. the argument that this includes everyone is provably wrong. The GP doesn&#x27;t have FB. I don&#x27;t. Any social circles including him or me have to live with the fact that yes - you might have to use something different to contact us.<p>If you have only 1 or 2 of those in your network, isn&#x27;t the big &#x27;one IM service to rule them all&#x27; idea dead? If you already are at a point where it&#x27;s &quot;FB for most, except for mail&#x2F;whatever for X&quot;, is it a big step to &quot;everyone chooses what to use again&quot;? The overhead is already there, no?<p>All I can say is: This works fine for me. I have neither FB nor WhatsApp (I stopped using the former a long time ago and never joined the latter). People can reach me just fine and ~probably~ get a faster response from me anyway. I really don&#x27;t understand this whole concept. &quot;Overhead&quot; to contact someone? Let&#x27;s be real here: Either you care about contacting someone or you don&#x27;t. If you don&#x27;t, then I&#x27;d just not name them a &#x27;Friend&#x27;. If you do, the mental exercise to open a different app (like - mail)   shouldn&#x27;t even be worth mentioning?