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Mobile Minutes: IBM Watson app; Bernie Sanders joins Snapchat; Square?s IPO; Yahoo?s fantasy sports troubles

IBM Watson might be best known for outsmarting "Jeopardy!" champion Ken Jennings to win $1 million on the game show, but this year the supercomputer system has a new goal: to be the best Santa's helper ever.

One Democratic candidate just dropped some big news. Bernie Sanders joined Snapchat, and potentially switched up the campaign game by acquiring a direct line of communication to his millennial constituents.
 
What investors are willing to pay for mobile-payments service Square Inc. in its initial public offering will hinge on how much of a technology premium the company warrants for being a member of the startup ?unicorn? club.
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A probe by New York State's attorney general into the fast-growing, multibillion-dollar daily fantasy sports industry has been expanded to include online media giant Yahoo Inc, a person familiar with the matter said on Tuesday.