Ever see someone's pick and think it would be cool to add that one but you really don't want to TP there right now to do it? Okay, maybe this doesn't happen every day of the week. Well, but if it did, wouldn't it be convenient to just copy it? You can do that now (at leat until the bug is patched) in Firestorm.
How to do this opens another door into the bizarre. Also part of this strange bug is that you can change the picture displayed for that other person's pick on their profile (the change is only visibile to you, though). Once you go through the normal steps of changing the photo, you'll find the pick has also been added to your profile.
I don't know if it deletes any of your current picks if your list is currently full or not (I didn't want to go through the pain of finding out), but fair warning just in case.
Anyway, fun bug.