Today on the 
Chromium blog, 
we announced that we’re open-sourcing the 
RLZ library in Google Chrome as its own project.  The RLZ library gives us the ability to accurately measure the success of marketing promotions and distribution partnerships in order to meet our contractual and financial obligations.  For example, the RLZ library generates a query parameter that sometimes appears in Google search URLs in distributed products:

We’re excited to not only improve the transparency of Google Chrome, but also offer potentially useful code to the open source community.  Please 
check it out and 
let us know what you think!
By Glenn Wilson, Product Manager