[arkitaip]

You can try emailing pg, but that's more of a rumor as it's unclear what account deletion would do. Certainly it would not remove your contributions on HN.

[antrover]

It'd be nice if there were a terms of service stating this when signing up.

[chc]

You should assume it when signing up for any site unless otherwise indicated.

[antrover]

Assumptions are the root of all evil.