Hi Im 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 youll get a warning and disapproval but best practices is to archive  Theres even a handy  thatll 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 thats not a big deal  For anyone else reading your page it can be particularly if youre discussing an article  often user talk pages become impromptu talk pages if two people are debating an issue  Yet more of wikipedias rules and mores that are not immediately apparent to new users    Wikipedias rulessimplecomplex