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You must nominate a matching domain to activate GA tracking. Note this feature allows you to nominate different urchin codes for different domains or none at all. For example, you might not want to track stats at all from developer and staging server machines.
Make sure active is always on; this property is deprecated.
Ignore Types for now; its an advanced option that needs a bit of fleshing out. Crawl through the code if you must.
The username and password for the GA API is entirely optional. It is used to pull statistics into the application on demand from Goolge. You require the GA login credentials in order to see stats in the GA webtop overview tab, or to use the "most popular" content publishing rule.
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