I'm not disagreeing with them. I'm just a little confused why people are bringing up that you don't need to explicitly attach a notice to content you create to retain the copyright (since 1988 in the US). Of course that's objectively correct. I never argued otherwise. And to add, I pointed out that by the letter of the law, quoting my post on HN is a violation because I never granted you a license to do that (you'd have to argue fair use before a court if I sued you). I'm not disagreeing I'm just continuing the discussion.
My argument is that it's not implicitly fair use for a social network to copy user content to which they don't have the copyright and distribute it across a network. And that that's crazy because a (distributed nontheless) social network doesn't work if there isn't a shared understanding that when users post publicly that they're granting the public a license to copy, re-share, remix, etc. their content. Which is de facto releasing it to the public domain.
My argument is that it's not implicitly fair use for a social network to copy user content to which they don't have the copyright and distribute it across a network. And that that's crazy because a (distributed nontheless) social network doesn't work if there isn't a shared understanding that when users post publicly that they're granting the public a license to copy, re-share, remix, etc. their content. Which is de facto releasing it to the public domain.