What Does This Mean? The Big Data Concern:
The problem with losing 10% of your tracking data is not that the number represents a significant impact on your data at large. The problem is that it creates a real, unavoidable selection bias in your Google Analytics. There are, more likely than not, substantive differences between individuals who tend to be logged in and those who do not. Subsequently, conversion statistics generated from organic data in Google may misrepresent the actual behavior of your general user base because it neglects to include that 10%. This is especially important if that 10% proves to be a valuable, higher converting audience (which could be related to their technological savvy, for example).
The big Insight that I would like to add in addition to this article, is that for those people who understand Premium Content Curation will experience a massive ADVANTAGE from users and visitors that are logged in to their Google accounts.
Russell Wright and the Network Empire Team