ANN ARBOR, Mich. - Borders Group announced that it is welcoming back Kathryn Popoff as VP merchandising, overseeing the promotion and merchandising of adult trade and bargain books. An 18-year retail industry veteran, she joined Borders Group in 2002 as director of multimedia. She was named director merchandising for adult trade books in 2004, and was promoted in 2007 to VP merchandising, a post she held until Nov. 2009.