I think that writing can help us connect in general because it gives us more space to think by letting us get the thoughts and connections out and then share them with the world in a way that can help us connect with the rest of the world.  Specifically we can write things that are meaningful to us and then share them and then others can read them to learn about who we are.  We can write about events that happen and how they affected people and things around us and how they affect others that aren't anywhere near it.  We can write to show things to people that can't see them to bring everyone together, to help everyone else understand, and simply to connect.