if a creepy person felt so inclined, they could easily create a bot that logs the file names of images that are posted and assigns them an ID.
You could then recognize anons by their ID whenever they post certain images.
It wouldn't have 100% accuracy because people can save eachothers images with the same file name but it would give you a rough idea.
maybe the ID could be a random name like Bob or Jeff. There would be an extension that replaces the name "anonymous" with "Jeff" whenever it detects that they are posting.
To everyone else, they would just a bunch of anons interacting with seemingly random images attached to their posts, meanwhile you'd be like "haha, classic Jeff post".

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