Having engaged in some flame wars, without wanting it to happen, it did cross my mind that they could be tracked using some sort of detection of the height of t

Having engaged in some flame wars, without wanting it to happen, it did cross my mind that they could be tracked using some sort of detection of the height of the tree and the time between the replies. Also I think that's how pg tracked them before, because he enganged almost instantly to stop one I was involved recently.