So I used to treat Flickr as a storage unit for my photos/art/sketches because they used to offer 1 terabyte of space and you could have as many private photos as you like. So I have hundreds of sketches and ref photos all set to private.
They then changed it to a smaller number of space (I can't remember how much) when yahoo bought them. No big deal for me since I wasn't over the limit.
But then when yahoo dumped them, they since have set a limit 1000 photos per account and only 50 of them can be private. But instead of putting my files to public I just re-download all of them and expected the company to delete them.
They haven't deleted them yet and it's been 4 whole years and I'm still getting emails that my account is in violation and they will be deleted soon.