Kaiser Health News staff writers Mary Agnes Carey and Julie Appleby, working in collaboration with The Washington Post, report: "The health law's online marketplaces, also known as exchanges, will be open for enrollment Oct. 1. They will allow individuals and consumers to comparison shop for health insurance, much like they do now online for an airline ticket or a hotel room, and apply for subsidies, if they are eligible. If done well, proponents say, the marketplaces could make it easier to buy health insurance and possibly lead to lower prices because of increased competition. But, if designed or marketed poorly, the exchanges will not attract healthy people and will instead be left with a higher percentage of sicker people that will cause premiums to rise" (Carey and Appleby, 9/16). Read the story.