@maytte
We know that the Steemit Blockchain is very sensitive to people's privacy and any kind of content you share with other people, including the privacy of people who use e.g. For example if you need to power up you have to use the key or when the steamer team gives you the pdf file it contains all the keys you can use to post your content. You can share with other people or you can use these keys to withdraw your money, however all your data is safe with these keys and it is a best practice.