In other words, context collapse occurs when several distinct groups of knowledge coalesce into one group, in terms of communication. Context collapse is caused by social media like Facebook and Twitter because they respectively group all of your friends and followers into one group that all receive every post or update you make on your social media. This allows people who would not otherwise receive this type of information to receive it. To understand why context collapse is a concern for privacy, we must first note that everyone uses what is called selective self-presentation. Vitak cites Goffman when she defines selective self-presentation as "the interactions between individuals and their audiences as a performance." in which certain features are emphasized while others are obscured” (452). This immediately makes context collapse a problem, because when context collapse occurs, individuals cannot present themselves effectively. This lack of a defined audience leads to tensions online (Vitak 454), preventing people from revealing their true selves, which are “an essential part of maintaining a relationship” (Vitak 453). When individuals are unable to reveal themselves, they are