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How does UA work?

UA is iteratively calculated for all accounts based on the follow connections between all accounts. The UA of an account increases when it is followed by other accounts with a high UA. UA is independent from reputation and steem power.

I don't understand. Is it the amount of followers you have? Is it being followed by popular bloggers? What is the algorithm they use? Do they have a whitepaper?

Sorry if I ask a lot of questions but the whole thing confuses me as it's not explained how it works.

You can find more information here:
https://steemit.com/steemdev/@cryptoctopus/user-authority-a-better-reputation-system-with-interesting-applications

Sorry, the project is in a very early beta stage :).

I’m also unsure, though in whatever case, IMO, spamming users about it isn’t the most professional way to go about promoting it...