We’re used to social networks where we follow people and view what they post: Facebook, Twitter, Instagram and others depend on each user connecting with others in order for content to be shared. Plague doesn’t work like that at all, but it can be addictive despite its limitations.
Plague is a new paradigm for sharing information. Through its free iOS and Android apps, users post cards, containing text (140 characters), photos, and/or videos, and “infect” other users who are nearby. These users, in turn, decide whether they want to spread the cards to other users near them: swiping up shares a card, and swiping down ignores it. Each user has an “infection index,” which increases as they participate, and which determines how many people their shares will infect.
Read the rest of the article on Macworld.