Did ya hear? Pokes are back. The Facebook poke is famously content-free; it’s left to the poker and pokee to assign it meaning. (Gentle hello? “I’m thinking of you”? Sexual harassment?) Even Facebook ...

Yo—the app capable of sending just one word to the recipients of your choosing—has waged a war against the apps that attempted to duplicate its undeniably thin gimmick. If the company plans to ...

Mobile World Congress is not the best place to launch a new messaging app: With thousands of tech-savvy visitors in Barcelona, many of them toting multiple connected devices, public wireless and Wi-Fi ...

Yo is pivoting from simply sending the word "yo" to contacts of your choice to doing something more worthwhile: alerting Israelis of terrorist attacks. The app won't replace air raid sirens and radio ...

Yo!, a messaging application that lets users send only a single-word greeting to their friends, has gained a raft of new features via its latest update on iOS. The app - which has proven an unlikely ...

We can get any Yo user’s phone number (I actually texted the founder, and he called me back). We can spoof Yo’s from any users, and we can spam any user with as many Yo. We could also send any Yo user ...