Yeah. Twitter is 'just' a one-line text field and a page where you can read what other people have entered in that text field. But there's something more to i

Yeah. Twitter is 'just' a one-line text field and a page where you can read what other people have entered in that text field. But there's something more to its success than just that bit that any newbie web developer could clone in an afternoon. And even though blogging, threaded forums for discussion, chat rooms, email, etc. all already existed, it still has been enormously successful despite seemingly being drastically inferior to any of them in every way. Things don't have to be better or even good to succeed, they don't even have to be difficult to clone. A bit of luck at the right time followed by a snowball effect and they can be huge. $28 billion for a textfield? Sure, why not?