Yo. The greeting you use when "hello" is too polysyllabic and "hey" is too many characters is now a messaging app worth $1 million, according to the investors who backed it. And as it enjoys its ...

Yo launched to a thousand cries of people lamenting its uselessness. Now, the application that’s raised $1.5 million in funding is finally making itself useful. The company launched the Yo Store on ...