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Gmail, and the ads it sells. Compared to ads targeting PC surfers, mobile ads are a small market, but it's growing quickly. Research firm eMarketer expects U.S. mobile ad spending to grow 77 percent this year to $7.29 billion.
• With Home, Facebook is inserting itself between users and Google, diverting them to the social network's own ads and services. It's taking advantage of the fact that Google places few restrictions on how phone manufacturers and software developers modify Android. By contrast, Facebook Home would not work on the iPhone without approval from Apple Inc., and close collaboration with the company.
• "Facebook Home can only reside on Android because only Google was daft enough to allow it," said independent phone analyst Horace Dediu, via Twitter.
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• KITTERY, Maine (AP) -- The first sign of trouble for the USS Thresher was a garbled message about a "minor difficulty" after the nuclear-powered submarine descended to about 1,000 feet on what was supposed to be a routine test dive off Cape Cod.
• Minutes later, the crew of a rescue ship made out the ominous words "exceeding test depth" and listened as the sub disintegrated under the crushing pressure of the sea. Just like that, the Thresher was gone, along with 129 men.
• Fifty years ago, the deadliest submarine disaster in U.S. history delivered a blow to national pride during the Cold War and became the impetus for safety improvements. To this day, some designers and maintenance personnel listen to an audio recording of a submarine disintegrating to underscore the importance of safety.
• "We can never, ever let that happen again," said Vice Adm. Kevin McCoy, an engineer and former submariner who now serves as commander of the Naval Sea Systems Command in Washington, D.C.
• This weekend, hundreds who lost loved ones when the Thresher sank will gather at memorial events in Portsmouth, N.H., and Kittery, Maine.
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• NEW BRUNSWICK, N.J. (AP) -- The call from faculty members and politicians to oust top Rutgers University administrators grew louder, a day after men's basket

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