EXIF tags add textual information to photographs (and sound files) to provide detailed identification and technical data. Many are included by a digital camera when the photo is taken, but I strip that out, if present, because the photos here are not those the camera delivers; they’ll have been enhanced and tidied up.
In the process, I updated the images’ identification text, to make the arts & ego address clear on most photos.
Why do this? Well, partially because I think it useful to including licence information, but mostly because, like an old dog, I like to mark my territory.