[EN] Losing My Revolution | How Many Resources Shared on Social Media Have Been Lost? Losing My Revolution | How Many Resources Shared on Social Media Have Been Lost? | Hany M. SalahEldeen and Michael L. Nelson | Abstract. Social media content has grown exponentially in the recent years and the role of social media has evolved from just narrating life events to actually shaping them. In this paper we explore how many resources shared in social media are still available on the live web or in public web archives. By analyzing six dierent event-centric datasets of resources shared in social media in the period from June 2009 to March 2012, we found about 11% lost and 20% archived after just a year and an average of 27% lost and 41% archived after two and a half years. Furthermore, we found a nearly linear relationship between time of sharin... in Public bookmarkswith agearchaeologyarchivearchivingdarkdigitalearlyggogleinformationinfromationinternetknowledgememoryofpreservationsocietythetweetstwitterweb