Hi I m tremendously interfering I feel ashamed about it too Anyway you are entitled to remove messages from your talk page and only your talk page do it anywhere else and unless the text you remove is SHITSHITSHITCOCKSHITCOCKSHITTYCOCK you ll get a warning and disapproval but best practices is to archive There s even a handy that ll do it for you By removing parts of discussions in particular you run the risk of interrupting the flow of a discussion For you and your conversation partner that s not a big deal For anyone else reading your page it can be particularly if you re discussing an article often user talk pages become impromptu talk pages if two people are debating an issue Yet more of wikipedia s rules and mores that are not immediately apparent to new users talk Wikipedia s rules simple complex