(sorry for the multiple posts, just sharing my findings)

Here's a representative part of the chat:
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What can be noticed here is that multiple accounts are giving commands to the bustabit bot (!bst, !n, etc) even though the bot obviously doesn't work on this site. Yet that doesn't stop accounts from continuing to give these commands, indeed in the small sample above the account "hackforums" can be seen doing it twice in short succession, completely undeterred by the fact that there is no bot. Upon further examination it quickly becomes clear that this is not a real chat but just a replay of the real bustabit chat. This strongly suggests that the site owner is himself running a script on bustabit that is recording the chat, or at least has done so in the past.