<p>Companies that sell advertising have begun releasing their earnings reports for the latest quarter. The reports generally cover the July-September period, though some companies have fiscal quarters that depart from that.</p><p>Here are highlights of recent quarterly earnings reports from selected Internet and media companies and what they say about the state of spending on advertising:</p><p>Monday: Gannett Co. reports higher net income and revenue, helped by strong gains in political and Olympics-related advertising.</p><p>Tuesday: Advertising and marketing company Omnicom Group Inc. reports nearly flat earnings and revenue compared with a year earlier, as U.S. revenue grew but international revenue declined.</p><p><a href="http://www.boston.com/business/news/2012/10/17/what-earnings-reports-have-revealed-about-ads/ROCUwz2QCX7tILnPHLUQiN/story.html">Keep reading...</a></p>