Tree based textboard

What does /prog/ think about boards like treeboard[1] and ayashii world[2]?

[1] http://tree-board.net/
[2] https://sonzaishinaiworld.heliohost.org/bbs/bbs.php?m=tree

>>33
anonymous cryptographic keys generated by browser,
if your newbie key votes it has little voting power, but if you
participate your key get assigned more value by server,
plus you can have multiple keys.