Allowing the uploading of images is one thing. For that, any hosting service will do. They keep the storage of this data floating in Cyber Space. Some of them delete the data, after a certain amount of time. Tinypic is notorious for doing this. I once uploaded a puzzle which was a large pic on this one forum. I did it by cutting the orginal into 100 by 100 pixels and then uploading it as individual attachments. The puzzle bits are still there, after some 3 or so years, long after the hosted pic vanished.
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