With an aim of using a larger more descriptive client set, I had used a different index to track May CPCs. However, it seems to have caused some confusion to many analysts who read this blog. Seeing the amount of email seeking clarification I am providing CPC data based on the old index. Here are the CPC trends based on the old index:
Since many readers are using this data to track CPCs in the long term, I am going to use the old index in the future.
Dr. Siddharth Shah,
Director, Business Analytics
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