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Because they paid me $40 for it and because I wanted to have my Steem name and reputation verified and saved on the Byteball blockchain forever. The cost of that fee is what I sent you – so that you can pay it, even if you hadn’t have any Byteball to begin with. I’m giving away this meagre 600 kByte so that people can pay the fee and earn millions of Bytes, you see.

And anyway, you can keep it private, if you want. Just tell the bot to keep it private. You will still get your reward.

Ok, makes sense, thanks!