meta-question: comment subject field

Anyone more well-practiced at dreamwidth than I am know how to set mine such that people reading my posts, by default, will get a Subject: field on their comments that will copy the subject line from my post (but let them change it)? Livejournal did this by default, and I really really miss it - it's the one way in which I think dreamwidth is far inferior to LJ, and if it weren't for the Russian takeover, it would be the reason I'd stick with LJ. But there must be a way to customize things so that this happens for my posts, even if it's not set that way for other people's posts, right?

It's so frustrating that all comments get emailed to me as "Reply to your entry" or "Reply to your comment" or "Reply to a comment" with no indication of which post or comment it is. That's one of the main things that drove me away from using dreamwidth regularly the other times I tried to get into the habit, but hopefully there's a way to fix it.