Exhibit 23.1 CONSENT OF INDEPENDENT ACCOUNTANTS ---------------------------------- We hereby consent to the use in this Registration Statement on Form S-4 of Penton Media, Inc. of our report dated March 19, 2002 relating to the financial statements of Penton Media, Inc., which appears in such Registration Statement. We also consent to the references to us under the heading "Experts" in such Registration Statement. /s/ PricewaterhouseCoopers LLP PricewaterhouseCoopers LLP Cleveland, Ohio August 30, 2002