AFAIK bots are used by moderators to detect and delete posts , this is used mainly for spamming users like "Help me" begging threads and the "Destroy KNC miner" thread who are spamming. Might wanna contact a moderator, preferably Mitchell or Cyrus about this.
And also , you might wanna copy those messages and paste them here if you want any opinions on it, or all you will be getting is speculation about what might be happening.