How many users completely block Google Analytics cookies ?

[Masoko-T]

Hello everyone!

In your experience, how many of your visitors' browsers completely block cookies including those of Google Analytics ?

[KevinBudzynski]

Anytime. I'm glad you asked it because I don't think many people realize how high these numbers may be (I know I didn't have a clue).

[Masoko-T]

Thank you for your answer Kevin, and especially for the numbers ;).

[KevinBudzynski]

See below from Azigo:

This post is a place to keep track of the sources of this info. So far I’ve only found a few numbers. Must keep digging.

• 30% of users delete cookies according comments by Jules Polenetsky on a panel at the W3C Workshop on Web Tracking and Privacy
• **40% **of users delete or block according to OpenTracker.net
• 36+% of Australian Internet users delete their third-party cookies in a month according to comScore report (2011)
• 76% of Safari users block third party cookies according to Gibson Research. Note: This is super-high because Safari is the only browser that blocks third-party cookies by default

[AndieF]

Interesting question. I can't run the experiment now but it would be interesting if people could check their server logs to see how many people viewed the homepage, and compare that for the same period on Google Analytics and post the percentage of people not tracked in Analytics here.

That would give us a pretty healthy insight into it. I'll try to find some time to run it on a couple of our sites later this week.