I have found a dodge if you want to store and copy a picture to pPrune.
Upload as normal but the picture initially seems a bit cropped. When saving it it seems to be an eternity of it to display, if ever. However whilst the buffering circle is going around the link is displayed in the box. It will not highlight in the normal sense but if you track to the end , highlight whilst tracking back to the beginning it will copy the link.
You can then post it without having to see the whole thing on Photobucket.