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Streemian is a service where users can follow curation trails, and so some other neat stuff, but this requires the website to get authorization to post/vote on behalf of the user. What has happened here is that they used the upvote from all their users to promote their own announcement.

While this is not really nice, they do have the option to opt out of this in the settings menu on their website. I did this, and my account was not used to upvote the post. But I bet many people feel like they voted on this without their consent, which is partially true given the fact that this upvote was opt-out rather than opt-in.

Wow...so they used users key haha
Is this decentralized social media they said?
Got is it's so clear now.

Keep in mind that this was done by Streemian, not by Steemit. All the people who got their keys used to upvote with have willingly given it away to Streemian at one point, and even agreed to this in the terms and conditions (although some claim it was changed after they gave their key away). The Steem network is just as decentralized as ever.

Okay i will keep that in mind
I was just angry a bit :)

Hehe, I completely understand. Just don't blame the Steem blockchain or Steemit, because they had nothing to do with this :)

^^ okay.
Can i ask what is different
Steemian.com and Steemit?
I'm newbie. Hard to understand

Steemit is the website that you are currently using for interacting with the blockchain. Streemian is a service that you can use to autoupvote users or join curation trails.

Uh, they are completely different websites and orgnizations?

I want to know too.