That's interesting, do you know if theres a better alternative? Seems like it should really be something that should be fairly accurate, at least in terms of trends
Only good for larger sites, as it doesn't cover smaller ones
Here is TC http://trends.google.com/websites?q=techcrunch.com&geo=a...
Here is HN http://trends.google.com/websites?q=news.ycombinator.com&...
PG - how accurate is it? Suggests ~20k daily uniques to ~50k now
http://www.ycombinator.com/images/hntraffic-2apr11.png
Pageviews are thrown off somewhat by crawlers, but unique ips shouldn't be.