netmeg - 5:17 pm on Nov 23, 2011 (gmt 0)
Is there an easy way in google analytics to see the percentage of not provided visits versus keyword-provided visits?
Make it a custom advanced segment.
Here's a link from Avinash Kaushik that will create one for you. (Not sure if this will work, it's a weird string - if not, just Google advanced segment not provided)