The photo's flipping around is not likely a user issue that you can fix, but try anyway. This problem is caused by the way the device (cell phone etc.) codes the data file, and when the forum software sees it, it interprets the data differently than intended. It's come up before, and I don't recall if there was a fix. I'll poke around and see if I can find that discussion.
*EDIT* Here is that thread. Sideways pictures