Attribution text is now limited to 100 characters and often that's not enough.
When images do not have a title I add text about the who, what, where & when of the image (and afterwards the name of owner of the media). Sometimes it's not easy to make it fit in 100 characters.
Through my experience 120-125 characters would be more than enough. A small increase but a great improvement, with no negative impact on the stroymap navigation.