<p>I've noticed a few times that there is an entry in the revision history that the question was tweeted.  What is this all about? I haven't seen this on other StackExchange sites, but maybe I just haven't noticed it yet.</p>

<p>For a full list of questions tweeted you can go here: <a href="https://twitter.com/StackStats" rel="nofollow noreferrer">https://twitter.com/StackStats</a></p>

<p><a href="https://stats.stackexchange.com/posts/173458/revisions">Here is an example</a> picked at random from the tweets on that feed.</p>
