Ask HN: Any non-techies have advice for a good cover letter?
I've searched for best practices, tips, etc. on writing good cover letters, but the information on the Internet wasn't very helpful. Most articles repeat the same dull tidbits and leave me wanting to tell my brother not to submit one at all (which I won't do). A couple (newer, edgier) articles suggest being completely different and making a splash with a creative and arguably unprofessional letter. I'll take it all into consideration, of course.
But if anyone here who actually writes/reads cover letters could share a couple high-level criteria for an effective cover letter, I'd appreciate it.