Twice I have shrunk a photo down to what seem to be acceptable tininess, posted it in a message, and while I see it's there when I look the first time, if I come back later the photo seems to have disappeared. Does it just disappear to the poster, or does it disappear for everyone? I know that one was at least visible for a while to more than just me, because there was a response to it.
So, do pix posted IN a message, even if "small," have a limited view life, and if so, how long?