What earnings reports reveal about online ads

Companies that sell online advertising have begun releasing earnings reports for the latest quarter. 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.

- July 16: Yahoo Inc. says earnings climbed 46 percent, thanks to a major boost from an investment in Chinese Internet company Alibaba. But Yahoo's revenue fell 7 percent from last year, highlighting a recurring problem despite other signs of progress under Marissa Mayer's leadership as she marks a year with the company. After stripping out ad commissions, Yahoo's revenue came to $1.07 billion. That was slightly below analyst projections and marked a 1 percent decline from last year. It's the first time that Yahoo's net revenue has fallen since Mayer took over.

Coming up:

- July 18: Google Inc., Microsoft Corp.

- July 24: Facebook Inc.

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