Well, in a recent article from Reuters titled "Blogging economists draw cyber-crowds", five of the six economists mentioned indeed use Six Apart's tools - four are on TypePad, the fifth on Movable Type. They've voted with their pocketbooks.
Seriously, it's great to read about customers succeeding with their blogs. Mentioned in the article are:
"(Dani Rodrik), the professor of international political economy at Harvard's Kennedy School of Government, started his blog in April at http://rodrik.typepad.com/."
"Daniel Drezner, a professor at the Fletcher School of Law and Diplomacy at Tufts University in Medford, Mass. He blogs on global political economics at http://www.danieldrezner.com/blog/."
"The Big Picture (http://bigpicture.typepad.com/comments/) following the market impact of everything from the Federal Reserve to housing."
"Brad DeLong, who teaches economics at the University of California at Berkeley (who) writes regularly at http://delong.typepad.com/."
"Mark Thoma, an economics professor at the University of Oregon, writes Economist's View at http://economistsview.typepad.com/."
So why are these economists blogging?
"It's a way for me to keep a voice in the conversation," Drezner said, adding that blogging has helped raise his profile. "The New York Times Op-ed page now returns my phone calls."
That must help make the dismal science a bit more sunny.