* Meet the patents: What Yahoo is using to sue Facebook
* Bloomberg survey: 52% say private equity "mostly bad"
* Tim Carmody: The damning story behind "homeless hotspots"
* Facebook fallout: SEC nears charges against two private share brokerages
* Tumblr of the Day: Visiting Egypt's entrepreneurs
* Dan Baum: How doctors reinvented the human heart
* James Altucher: Takeaways from the Spanx billionaire
* Rick Rothacker: Will Citi be the surprise stress test winner?
* Kara Scannell: Whistleblowers drawn by tip-off payouts
* Ken Griffin: Super-rich have "insufficient influence" in politics
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