New York--Cahners Business Information announced Tuesday it has appointed three new executives to shore up its e-commerce efforts. Greg Samios is now VP-business development in Cahners' electronic media division, where he will develop corporate strategy for the company's electronic publications and products. Ted Crouch is now VP-product development in Cahners' electronic media division, where he will manage the product development staff. And Matt Harris is now senior manager-horizontal services for Cahners' Web research and development group, where he will develop e-business systems to be used across the company. The announcement comes on the day that Marc Teren, formerly of Washingtonpost.Newsweek Interactive, officially joined Cahners as CEO.