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Steemit does have a GitHub issue to allow the upload of images via the posting editor. The images would be hosted by Steemit, Inc. though - and would not be stored on the blockchain. Unfortunately, Steemit itself is subject to the same potential of censorship that many of the other large social media companies are. It is really the storage of the content on the blockchain that makes it different. Even if they were to somehow 'take down' Steemit - the content would all still be there as long as there were other sites/tools that could interact with and run the blockchain.

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