TechTarget hires 2 IDG executives The rivalry between TechTarget Inc., an upstart Needham technology publisher, and the giant International Data Group intensified as TechTarget hired away two key IDG executives. Maryfran Johnson, longtime editor of the IDG publication Computerworld, and Joseph Levy, who headed the company's CXO Media group, are joining TechTarget to launch publications. ''Right now we're not revealing what we're working on, quot; said ...