He writes the weekly column Retire Smart, which appears in newspapers around the U.S. and is syndicated by Tribune Media Services. He also edits and publishes two websites focused on the 50+ market—RetirementRevised.com and 50plusdigital.com. Mark was the founding editor of Satisfaction, a groundbreaking lifestyle magazine and companion Web site addressing the concerns and interests of the Baby Boomer generation, and has written extensively on Boomer business, marketing and economic trends for newspapers, magazines and Web sites. He is the former editor of Crain's Chicago Business and Sunday editor of the Chicago Sun-Times, and wrote op-ed columns for both publications on business and economic affairs.