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@georgivanov
It’s the posting key. You can find it under https://steemitwallet.com/@georgivanov/permissions

It’s the lowest permission key. No funds can be moved with it even if you get hacked (not by us of course, our site is safe!).
Enjoy

@georgivanov
Also, if you’re the paranoid type, I can create an account for you and you re-set all the keys. As you prefer..

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