It turns out there is such a page, it was just hard to find.

If anyone else wants to see replies to your comments (though not your posts), from most recent replies to oldest, just go to your inbox.

This can be accessed by following links instead of by knowing the url to type in, but the route is complicated enough that perhaps it should be shortened in the long run.

(The only current route I know: 1. Go into my "account preferences"; 2. Click on the "friends" tab; 3. Click "Send message", as though I were going to compose a message; and then 4. Click on "inbox".)