Tuesday evening, for the third time in a month, Twitter experienced technical difficulties. It wasn’t an outage from high traffic or developmental testing — it was missing celebrity tweets. It sounds flippant, but celebrity presence is a big part of what makes Twitter so popular. Yesterday, for at least twelve hours, several highly trafficked tweets from stars like Lady Gaga, Justin Bieber, and Ellen Degeneres disappeared. In fact, it was Ellen’s beloved Oscar selfie, jam-packed with A-list celebrities and retweeted more than any tweet in the world, that became unavailable. Luckily, it has since been restored, along with many others that disappeared. It is unclear if Twitter only gobbled up these few, highly trafficked tweets or if regular users have also been affected.