Google Analytics appears to be down - for nearly two days now. All sorts of different sites show the same pattern - no data since 2 or 3am on the 29th.

Since Alexa is based on sampling, people with the Alexa toolbar installed can affect traffic more than they might think. Alexa seems to over estimate traffic to rarely visited subdomains - showing the power just a few people can have in the Alexa traffic rankings.

Nielsen//NetRatings is a well-established authority on web site rankings. However, their data and the results derived from it, are questionable at times. The bottom line is that you should not use NetRatings if you’re a B2B company.

Google Analytics has been redesigned. The new interface is bold, clear, and generally pretty great - though it will take a little getting used to.

What’s the point of building a web site and SEOing it if you don’t then measure to make sure that what you’re doing is effective? This session at SES NY went over web analytic strategies and the tools that are available for analytics.