Advertising revenue among business publications enters 2006 at a modest pace, with the Business Information Network (BIN) report for January and February 2006 showing combined revenue for the YTY flat at -0.1% compared to 2005. However, several strong category performers have emerged thus far, including leaders Aviation, Aerospace, Military and Resources, Environment, Utilities, who increased revenue 32.73% and 17.46%, respectively, through the year-to-date. Monthly totals for January 2006 opened the year on a positive note, increasing 0.44% over the same period 2004. Calendar year 2005 also opened slowly, but closed strongly with combined ad revenue for the year up 5.4%. 2005 is expected to follow a similar trend. Though ad pages posted a slight drop, down 1.4% versus February of 2004, categories Architecture, Design, Lighting and Building, Engineering, Construction have increased their ad pages by 7.64% and 5.41%, respectively, in year-to-date totals.