yes
Question
Are the accounts @Dailyfun, @News and @CHESSCOM coded accounts?
No, they aren't coded accounts. They may have some automated processes that can use the accounts for posting, the most obvious example is @chesscom which is how a lot of messages for club/matches/votechess/etc gets sent out. But in general other staff use the accounts to post the appropriate type of content.
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Are the accounts @Dailyfun, @News and @CHESSCOM coded accounts?