[eqvinox]

> there's a search box, you can add your username to the query and it'll match.

That gives me the few submissions I've made, but not my comments, and not specifically my comments on posts from the domain nullprogram.com :/

… but it's probably time to leave this be, too.

[ropejumper]

Huh, I hadn't realized you can't search for submission domains, that seems like an oversight. To search for comments specifically there's a dropdown in the top left by the way.