If it had copied either, your snarky answer would have warmed my heart. So which of those two sites introduced the live feed to the Internet? Which one was base

If it had copied either, your snarky answer would have warmed my heart. So which of those two sites introduced the live feed to the Internet? Which one was based on granular privacy control? Or had the idea of connecting a "wall-to-wall" to handle discussions back and forth? Or created one of the most innovative ad systems since Google? Or added semantic data to its user relationships? Or created miniature overlapping networks for organizing?