Morning Edition

LinkedIn is the first social networking site to go public. Renee Montagne speaks with Steve Blank, a veteran of Silicon Valley, about what makes Internet start-up companies worth billions of dollars, and when are they overvalued.

Steve Inskeep has the Last Word in business.

President Obama plans to outline steps to boost the economies of Egypt and Tunisia, when he delivers a major policy address on the Middle East today. The White House says economic improvements would help to reinforce the positive political changes sweeping the region.

Russia's President Dmitry Medvedev and his Prime Minister Vladimir Putin are sending confusing signals about which of them intends to stand as candidate in next year's presidential election. Moscow is rife with speculation over which of the two men will emerge on top.

NPR's Neda Ulaby goes inside one massive PR stunt. Frito Lay setup in Times Square with Padma Lakshmi of Top Chef to promote the company's products as healthy and all-natural.