The media uploader automatically puts an image's file name in the Title box. But if you click the edit button on an image in the Visual editor, it shows an empty Title box. And if you open the image from the Edit Media panel via the Media Library, it doesn't even have a Title box at all. Would be helpful if these were consistent. Pretty confusing as it is, and I'm not sure whether I should bother putting a title on an image or not.