Disney on Tuesday launched an online subscription service aimed at preschoolers - Playhouse Disney Preschool Time Online - based on characters and shows from Disney Channel's "Playhouse Disney" programming, including "JoJo's Circus" and "Higglytown Heroes," writes iMedia Connection. It can be purchased only through Disney, but the company has plans to integrate it into Disney Connection, a free kids "channel" offered to subscribers of Comcast, Adelphia, MediaCom and Verizon high-speed internet services.