First, make sure you have Google Analytics installed and running on your blog.
Finally, sign into your Google Analytics account and create a custom filter to exclude all visitors that have the "notrack" cookie set. The filter values should be:
Google Analytics should now begin ignoring your visits.
Filter Type: Custom filter > Exclude
Filter Field: User Defined
Filter Pattern: notrack
Case Sensitive: No
This approach isn't specific to Blogger; it should work on any site, including other blogging platforms such as Wordpress and Movable Type.
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