AdWords Help Custom Search Engine

I've put together an AdWords Help Custom Search Engine (by Google Co-op). Reading Searching the Inside AdWords blog shortly after the launch of custom search engines, I realized AdWords users could benefit from a search engine that only grabbed results from authoritative sources. Currently, these are the only sites in the index:

• adwords.google.com/*
• adwords.blogspot.com/*
• groups.google.com/group/adwords-help*
• google.com/adwords/learningcenter/*

The "adwords.google.com/*" URL pattern includes the Google AdWords Help Center. Are there any other authoritative sites I should include in this custom search engine? Should I omit the AdWords Help Google Groups? I suppose they're only semi-authoritative but, nonetheless, are full of useful information. Will have to think about that. Again, please let me know if there are sites that should be added or deleted from the above list. Also, let me know if this search engine helps you solve an AdWords problem.

Update: I've added a dynamic version in case people want to bookmark a specific search query. Details here.

Technorati tags: adwords help, custom search engine, cse, google coop