I believe I’ve covered this before, but a turd like this hit my fan again today so let’s rant about the stench once more.
As a service provider, you are usually perfectly within your right to do with people’s non-personal data as you see fit. You run the service, you make the rules. It’s as simple as that. Sure, morals would dictate otherwise, but those aren’t hard rules, and definitely not ones you’ll be quick to pay for if you break them. If you’re big enough, your users are “stuck” with you anyway, since you’re just the most widely used service out there.
Today I learned that a certain average story-hosting platform edited a post before putting it live, without as much as notifying the author. It was only two words they added, but it pushed a neutral part of his article into describing the (aside) topic in a slightly more negative light. And guess what, it was related to politics? Agenda-pushers everywhere.
The only way to be guaranteed integrity of your content is to host it yourself. That’ll be easier in the future, but for now it’s just a pain in the ass.