The flip side of that is that many services mangle or strip meta-data. Exif data is also easily editable and not all cameras, phones, or software properly popul

The flip side of that is that many services mangle or strip meta-data. Exif data is also easily editable and not all cameras, phones, or software properly populate it. I can see a situation where someone edits a photo before uploading which causes the creation date to default to the date it was edited and not the date the photo was taken.