What's the rationale for what MudcatCafe publicizes on Twitter?

Is it anything some user has decided to publicize by a "Share This Thread" click, or is it done by the admins?

Problem with the first option is it's open to abuse - spammer posts in a thread and immediately tweets that they've done it, with the result that both Mudcat and Twitter get synergistically polluted with crap. Whereas I can see good reasons for the admins to use Twitter for specific purposes like announcing outages, new features, or activity on a very small number of important moderated threads.

At present the account is generating a tweet every 40 minutes, which is too many.

(I am JackCampin on Twitter and I generate about two tweets a week, few of which are intended to be interesting to anyone outside the Central Belt of Scotland).