People are going crazy for a new app that only lets you send messages saying 'Yo'

People are going crazy for a new app that only lets you send messages saying 'Yo'
(Image credit: iStock)

You know that one friend who always texts you a cryptic "hey" or "yo" and nothing more?

Well, investors in deep-pocketed Silicon Valley have given $1 million to Yo, an app whose only function is basically that. Yo allows users to send push notifications saying "Yo" to any of their friends within the app. That's it. It looks like this:

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Samantha Rollins

Samantha Rollins is TheWeek.com's news editor. She has previously worked for The New York Times and TIME and is a graduate of Northwestern University's Medill School of Journalism.