I would much rather take the date of the journal entry as the identifier and count upwards then, so if I link `http://funnyjunk.com/manwithreallylongnose.jpg` it becomse `2013-06-08_manwithreallylongnose.jpg`, and if I link a file calle `image.png` twice, the first one will be `2013-06-08_image.png` and the second `2013-06-08_image_2.png`