The only one I know of is lobste.rs, which is all fine and good if you know someone and can get an invite — without one, you're stuck in read-only mode. No idea

The only one I know of is lobste.rs, which is all fine and good if you know someone and can get an invite — without one, you're stuck in read-only mode. No idea why they'd make a decision like that. I like HN for its news, but am not so sure about its moderation policies, muchless the sometimes-hypercritical attitudes.