Tinder’s simple, sleek swipe-to-choose design has been borrowed by multiple startups trying to appeal to young consumers, and one is taking off in a big way. Plague, an app for spreading information virally, has a user base that is “growing rapidly” and an addictive design. Created to be a “gamified version of Reddit,” the app allows users to swipe through posts that are shared—those that are swiped up are shared with their group, encouraging the distribution of interesting content. (The Next Web)