I remove them only after I've read (and replied) to it. In the case of Jim's reply in this thread, I didn't even have the choice to remove them, since they never appeared as replies and the "Remove" button wasn't even there. So it was impossible for me to remove them. How they got marked as removed is beyond me.

>When reading a message, are you clicking on Remove in the lower toolbar of the message? I see this reply as logged to your account but marked as removed.