Ziff Davis Media Inc., New York, announced Thursday it has named Peter Longo exec VP-publishing director of its consumer magazine group, which includes PC Magazine. Longo had been senior VP-publisher of PC Magazine. He will continue to oversee the magazine and will add Family PC and Ziff Davis Custom Media to his responsibilities. Earlier this week, Ziff Davis announced it will launch a business magazine called The Net Economy. It will be aimed at management in the Internet service provider, application service provider, telecommunications service provider and related industries. A preview of the magazine will be available in June. It will officially begin publishing as a monthly in September before a planned move to twice-monthly next year.