This has to be one of the most ignorant interpretations of a social media product. "no relevancy to anyone, and is a waste of time and money." First, your "proof" of Snapchat's lack of relevancy is literally an anecdote of how it is relevant to a girl's life. Second, do you think that Snapchat has to have some productive, utilitarian use to not be a "waste of time and money?" Snapchat provides a service that users enjoy (and this user in particular adores) using. IMO, that's the end of the story.