Share of Voice
You might have noticed that we added a share column to most of the reports with our version 2.5 update. What is that all about? In the online advertising industry, share of voice is used to represent the relative portion of ad inventory available to a single advertiser within a defined market over a specified time period. So, basically, the share column shows you what percentage of impressions each of your advertisers received during a period of time.
Example Report
We have gone a step further by making share of voice available for more than just advertiser reports. For example, what if you wanted to know what percentage of impressions were from Firefox users today? Sure, you could always get out your calculator and figure it out, but now you don't have to!
Right away you can see that about 36.63% of visitors today were using Firefox without even thinking about reaching for your calculator. You're welcome! Remember, the share column is available for almost all other report types as well (such as geography or custom fields), so you can now very easily compare impression distribution between many different elements and dimensions.
Mike Cherichetti
