I hear the twitter = public square analogy a lot but I fail to understand it. Here and on Twitter discussions take place. What is the difference?
One very obvious difference is that twitter does not purport to be a forum for any particular community or field of interest. So in that sense it's much more of a town square in that ppl can (or should be able to) tweet about anything.
Who is volunteering and binding them to be a public square with slippery slop values