You've got me. I find this system quite confusing (not that that's hard to accomplish...)

There is an option labelled something like Take Yourself Out of This List, but I've been afraid to try it.

I think what bugs me the most so far* is that there seems to be no way to change the subject title when you reply; and now that they're all in one list, a title that was specific to one thing looks ridiculous days later.
*I have finally begun to learn to go to the bottom of the list to find the most recent reply.