And in addition to that last posting on Analytics, this popped up from the Google Operating System blog:
Google Trends for Subdomains by Alex Chitu
“At launch, Google Trends for Websites didn’t support subdomains. Google’s service has been updated and you can now use it to find traffic information about subdomains.
“With Google Trends for Websites, you can get insights into the traffic and geographic visitation patterns of your favorite websites. You can compare data for up to five websites and view related sites and top searches for each one. Trends for Websites combines information from a variety of sources, such as aggregated Google search data, aggregated opt-in anonymous Google Analytics data, opt-in consumer panel data, and other third-party market research,” mentions Google.”
If you’re hosted in another domain, this may be useful to you. The visuals are useful to tell you if your web presence usage is growing, or not.