I guess one way around this problem is to quote the bits of whichever node you are replying to.
Bingo and ++. That's how I do it.
And yes, I know it should be unnecessary in a threaded discussion.
Au contraire! I think it makes perfect sense even in a threaded discussion. For instance, I also prefer to reply to email and newsgroup posts inline, paragraph by paragraph (or sentence by sentence when necessary.) It is, I think, always worthwhile to provide the context and save your readers the effort of finding it.
"My two cents aren't worth a dime.";