A number of Stack Exchange sites have their own Twitter accounts, which are controlled by a bot that tweets hot questions.
Some sites on the network have decided they don't like this, and have created their own independent Twitter account for the site, which is controlled by a group of humans who tweet questions that have caught the community eye, retweets of other comments about the site, and other on-topic links.
Should Worldbuilding become part of this latter category? With a Twitter account of our own, we could promote the site, promote the blog, engage with our community on another platform, etc etc. It could be controlled by a group of users (or the moderators, if they have the time and inclination to do it), which is arguably better than a bot.