"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.
Google doesn't show traffic stats for most of its domains, but you can find information about blogger.com, vevo.com, android.com, chromium.org, googlelabs.com, orkut.com and obscure domains like ggpht.com, googleusercontent.com and gstatic.com.
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