Advertising.com bases its index ratings on a baseline of 100 for a run of network, derived from testing over 15 million users served with more than 168 million online ad impressions. The study determined that companies in the finance and media industries have conversion rate scores of 23 and 42, respectively. Still, Advertising.com notes, different companies have different ways to measure "conversion" and different industries advertise online for different reasons.
Online Advertising Click-Through and Conversion Rates in US By Industry (2003 index
|Admin, educational & support services||68%||23%|
It is difficult to make generalizations about click through rates, but to help put the Advertising.com index ratings into better perspective, DoubleClick reports that over the course of 2002, CTRs for 630 billion online ads generated by its clients worldwide, began at 0.72% in Q1, dipped to 0.69% , then rose back to 0.72% by the last quarter of last year.
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