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This week's 5 hot new apps: Opinions on Yo yo-yo; LinkedIn to the job market; more

A roundup of the 5 hottest new apps of the past week.

'Yo', your app has been hacked

The recently launched mobile app Yo, which allows users to send the word "Yo" to friends' smartphones, was hacked by three students from Georgia Tech University, TechCrunch reports.

Yo: Some thoughts on a syllable and the signal-to-noise ratio

Maybe a one-bit communications service is not such a silly idea after all. Except, wait a minute, you can't do one-bit signals on SMS, can you?