"Professional photographers know that when you use free social media you're at their mercy, so to rely solely on Facebook or Twitter for something like a portfolio when you use nothing else and then complain about it kind of makes you look foolish," said Megan McGory, a freelance news photographer based in Lisbon, Connecticut.
Deleting metadata could be an issue, on the other hand, if someone is trying to track cases of copyright infringement or even stolen cameras, McGory added. "The camera's serial number is in the metadata and you can find sites using images taken with your camera that way," she said.
Facebook, Twitter and Flickr did not immediately respond to requests for comment on this story.
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