Twitter is about to delete all accounts that have been inactive for six months. The company says it'll start culling them in batches beginning on December 11th. To keep an account active, all users need to do is log in at least once before that date. Twitter says they're doing this to ensure that all users have agreed to its new privacy policies, and will also remove inactive users from people's follower counts. Also, deceased users will not be treated any differently from other inactive users, meaning their accounts will also be deleted. A Twitter spokesperson tells the Verge, "We do not currently have a way to memorialize someone's Twitter account once they have passed on, but the team is thinking about ways to do this."