For all those interested in Universal Search, I recommend you guys checking out SearchCowboys.com.
I wrote a post there on How to Track Universal Search traffic with Analytics.
It explains how to set up filters so you know which link in the SERPS was clicked if it was a universal search item. For some this is directly [...]

This is a public safety warning.
Google indexes public notebooks. Their robots.txt shows Google doesn’t disallow this. They only prevent the search results from being indexed, as you can see on the following image, or by looking directly at robots.txt

As some recent small research from Arjan Snaterse has pointed out, these notebooks can be used to [...]