The Web Analytics Solution Profiler (WASP) is a specialized extension aimed at analytics and online marketing professionals who want to do quality assurance and understand how their tags (web bugs) are implemented. Also includes a powerful crawler.
Here is a little more about the add-on from the developers:
Provides detailed information about the data being collected trough Query String and Cookies by web analytics solutions (called “tags”, “trackers” or “web bug”), ad networks, behavioral targeting and multivariate testing tools. Covers over 200 tools, including Google Analytics, Omniture SiteCatalyst, Coremetrics, WebTrends, ad+Network tags, VOC tags, and several others.
Want to learn more? You can learn more about the Web Analytics Solution Profiler from the Firefox Add-ons website.