It's a social media platform where anybody can leave little messages of 140 characters. You follow the tweets you want in your feed, and then there's hashtags, @mentions, and retweets.
You know all this. But what is Twitter?
Is Twitter a published medium (like a newspaper) or a public conversation (like you and me talking and being overheard at a bus stop)? Does it have, or is it a responsible publisher? Is it censored or free? Is it social media or a marketing tool? Can it also be a payment method?
