The New York Times Co. said advertising revenue gained 5.6 percent in July, thanks in large part to gains from web portal About.com, Crain's New York Business reports (via MediaBuyerPlanner). Excluding About.com, ad revenues rose 2.9 percent. Ad revenue at About.com rose 73 percent in July and 33 percent so far this year. The Times Media Group, which includes The New York Times and The Boston Globe, also helped boost revenue, with a 4.9 percent gain in ad revenue.