Over the last week, we've collected visitor traffic data from 25 popular websites in the search and online marketing space, including:

• Brian Clark from Copyblogger
• Aaron Wall from SEOBook
• Matt Cutts from MattCutts.com
• Danny Sullivan from Daggle
• Mike Davidson from MikeIndustries (he also runs Newsvine)
• and many more...

We're thrilled to be able to share this data in a way that illustrates the relative values of real visitor analytics vs. external metrics from competitive intelligence services. In the report, we've compared data from services like:

• Alexa
• Compete.com
• Ranking.com
• Netcraft.com
• Technorati

Sadly, the findings aren't particularly encouraging from a marketer's/researcher's point-of-view, but it does provide fantastically accurate insight that I don't believe is available anywhere else.

Check it out:
Website Analytics vs. Competitive Intelligence Metrics

A big thanks to all the participants; it's fantastically generous of all of you to contribute your competitive data so that others might learn. Please go visit their sites to help show your appreciation.

p.s. Frankly, I was shocked about the relative traffic levels of some of the folks on the list. You've got to see it to believe it.