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It is an account "without" keys. Submitting blockchain transactions via @temp does not need the transaction to be signed by any key. It's kind of a "public account".

Thanks! That explains the unusual test-like posts on it. Lucky it doesn't have too much STEEM/SP/RCs! :D

By the way, I discovered another account, id #0. That's @miners.

Hi, I'm @temp, AMA :)

Hmm, I'd better make it count, you only have 1 comment left with your RCs.

When moon? :D