The International Press Telecommunications Council has released a new study into the use of images by social media websites, finding that some of the most predominant ones, such as Facebook, Twitter and even Flickr, remove photographers' metadata from images they host.
"A social networking site is only as good as the information its members choose to share," says Michael Steidl, IPTC's managing director, in a statement. "If users provide rights data and descriptions within their images, these data shouldn't be removed without their knowledge."
The results show that Facebook and Flickr are some of the worst offenders, with most of the metadata removed from the original files uploaded. Twitter has also been found to remove Exif and IPTC metadata from its files.