If I send a pm to someone, how does it get removed from my list if I don't remove it????  I keep sending pm's to someone and before you know it some how it has disapeared. Can the person recieving the pm delete it from my list????

I don't think they can.  If your sent PMs are disappearing and you're not deleting them yourself, I'd contact the PBS team and have them look into it.  That shouldn't be happening.

Hi Bertie -You are the only one that can delete a PM.   under your personal message tab....top right - there are three tabs - to me, from me and archive?   Are you looking in the From Me tab or possibly did you archive the PM?   Also try searching for the message at the top right of the Personal Message screen is  drop down you can search by messages or members, change to or from me and also type in keywords.   Maybe you are overlooking the message?