[nomel]

Personally, I've learned to talk more precisely from these sorts of comments than anywhere else. In real life, people will rarely correct you. I think the concept of a "meta comment" is interesting, where you could push this sort of thing into a separate parallel thread that would normally be hidden.

[maleldil]

That's an interesting point. It's much easier to correct a stranger on the Internet, but it's also harder to be kind. Comments that manage to do both (like GP) are great, and I always like to see them.