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Here's a look at the tweeters we're following

With more than 100 million active users on Twitter, we've selected a few voices to share their insights as President Barack Obama delivers his much-anticipated jobs speech. Some background on each:

Mark Knoller is a White House Correspondent for CBS News. He reports for CBS Radio News, as well as "The Saturday Early Show." He also contributes to the weekend editions of the "CBS Evening News" and "Up To The Minute."

Felix Salmon is the finance blogger at Reuters, after a career of experimenting and innovating with blogging. Salmon studied history of art and philosophy at Glasgow University, and learned the difference between a bond and a loan during a stint at Euromoney Magazine.

Barry Ritholtz is CEO and director of Equity Research at Fusion IQ, an online quantitative research firm. He blogs at The Big Picture. In 2010, Ritholtz was named one of the “15 Most Important Economic Journalists” in the United States by The Daily Beast.

Mark Thoma is a macroeconomist at the University of Oregon. His research focuses on how monetary policy affects the economy. He's also worked on political business cycle models. Thoma blogs at Economist's View.

Nouriel Roubini is a professor of economics at New York University's Stern School of Business and a frequent contributor to CNBC, Bloomberg television, the Financial Times, Wall Street Journal and other major publications. He is also chairman of Roubini Global Economics and blogs at EconoMonitor.