New York—Total ad revenue in b-to-b publications was down by 2.8% in January compared with the same period last year, according to the Business Information Network report from American Business Media. Ad pages for the month declined 3.10%. The report is based on data from IMS-The Auditor and PERQ/HCI for health care. Hardest hit in January was the computing, software and telecom industry, in which ad revenue dropped 19.41%. Spending in government publications fell 16.84%, while spending in agriculture publications decreased 9.29%. Leading industries for ad spending in January were science, research and development (up 24.10%); architecture, design and lighting (up 13.92%); and pharmaceutical (up 7.49%). Also, the ABM reported that for the first time ever, revenue from "face-to-face" activities, including conferences, trade shows and events, surpassed revenue from print advertising in 2006. Face-to-face revenue, which totaled $11.3 billion in 2006, now represents 36% of total b-to-b revenue, compared with print advertising's 35% share.