• Search Engine Watch , Friday, October 19, 2007 1:16 PM

Enid Burns posts September's search ad impression and overall ad volume charts courtesy of Nielsen//NetRatings, providing a vertical- and company-specific look at online advertising's biggest spenders last month.

"Who has a Crush on You" (a somewhat shady company that is most likely promoting SMS- or email-based SPAM) took the top spot when it came to sponsored link impressions, with more than 3.7 million -- up almost 19% from August. Meanwhile, Google came in second, with 2.3 million (up nearly 57% from the previous month), and IAC/InterActiveCorp came in third, with over 2.2 million (up by about 2.5%).

From an industry perspective, the biggest trend to note was that most verticals (including automotive, retail and even travel) decreased their online spending overall.

The biggest belt-tightener when it came to category spending was B2B services -- who paid for nearly 40% fewer impressions in September than August. In contrast, hardware and electronics advertisers paid for almost 14% more impressions in September - the largest increase.

Read the whole story at Search Engine Watch »