mhansen - 12:12 pm on May 24, 2011 (gmt 0)
I'm definitely a card-carrying member of the tin foil hat club...
- webmaster tools
- DNS and website host IP
- etc etc
From those 5-7 things, Google can pretty much know everything they need to know to label, or "profile" you the user as a Webmaster or SEO. As webmasters, they don't really have to work hard... we connect the dots for them, by using their free tools, etc etc.
The REAL interesting part, would be to know how they profile "US", and then relate that profile to the sites we build or maintain. (Kinda hard to hide when you visit it 100 times a day and process orders, add content, etc)