At the moment when we send messages to each other on talk pages, its normally done back and forth between the two separate talk pages of each respective user. This makes following a conversation difficult, as you need to keep switching between talk pages.
My proposal is the system used on many other wikis - where you keep the conversation on the talkpage where it started.
- If you wish to message someone, do so on their talk page and expect a reply from them there - not your own talk page.
- If you receive a message on your talkpage, reply below it instead of the sender's talk page.
Some of us use this system already, so this CT is geared at encouraging more people to adopt it. If the concern is about missing a reply, the person replying can post the Template:Talkback on the asker's talkpage, which would let them know:
"Hello, <User A>. You have new messages at User B's talkpage."