AllThingsD takes a look at the plan for U.S. News & World Report, which used to be a weekly news magazine, then a biweekly one and is now a monthly publication. Now it will try to produce a weekly magazine once again. Online. And it wants to charge readers for it: A year-long subscription to "U.S. News Weekly" will cost $20. Insane? Maybe not. The Economist does a (relatively) healthy business while keeping its weekly magazine behind a subscription paywall. So does the Wall Street Journal's Barron's. And as the online ad business continues to evaporate, charging people for access to stuff they want no longer seems completely insane.