You are of course correct in a grand sense, but there's this weird gray area philosophically where someone builds a town square and says "everyone come and talk

You are of course correct in a grand sense, but there's this weird gray area philosophically where someone builds a town square and says "everyone come and talk in my square"...until the hear what you are speaking about! The problem is likely greater in our corporate/mercantilist system where some state-sponsored and some natural monopolies develop. Totally get and appreciate the private property of the corporation argument...it is their town square after all...but when there is only one that is 'allowed' to succeed, what happens? This then leads to specific tactical rules we have on the books in the US like FTC and even FCC regs, where some may protest unfair commerce. IANAL but I can see this is a real mess. Also, what is the ROI for Twitter when it comes to policing this? We know FB has been having problems.