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Nothing ever gets deleted on the blockchain. Once a transaction(upvote/comment/resteem) has already been done, that same transaction will stay on the blockchain for eternity.

However, what most Steem Platforms like Steemit, Busy.org or eSteem does, is hide the post visually or in UI. A "delete" button is then seen beside the "Edit" button if a post/comment didn't receive any (Zero) upvote/comment. If a post receive even a single upvote, the "delete" button is gone and only the "edit" button is visible.

In addition to this, there's also a time limit before the Delete button is gone. I'm not sure exactly how long it is though.

Steemit-based media Cryptocurrency it is on something called blockchain, blockchain characteristics make unlikely companions steemit postings will be deleted, because there is the eternal character of Blockchain characteristics.

All postings on the steemit is stored in the database Blockchain perfect and eternal nature or cannot be changed. This system stores all user databases include postings, upvote, amount of reward for author and curation copied in Blockchain.

But can replace the posts with the remove and replace with other writings and replace also the tags.

no there is no way to delete your post but you can do one thing about it which is edit you can edit the whole blog and even the title and write deleted on both.

If someone has interacted with the post it is not possible to delete the post.

If it has at least 1 upvote or 1 comment it cannot be deleted

Or downvotes.

Yeah true :)

But lets not think that negatively

Gotta provide the full answer. :) Even if its something we don't wanna hear.

True but I forget :D