[azemetre]

I'm actually kinda curious about this in regards to browser finger printing.

This isn't like statistics in a political poll where there is an expected margin or error, when it comes to logging sites you absolutely know everything about your users in regards to browser, operating system, and even the hardware (sometimes).

3% of a million is 30,000, 3% of 500,000,000 is 1,5000,000. An absolutely real chunk of users that can produce real value (for Instagram, ad dollars).

Why would there be a margin error at all? How would it be introduce? A large portion of crawlers masking themselves? I mean it's possible, but I do not know if that's enough to throw off proper logging.