Want to measure organic traffic?
Just take the number of Google Webmaster Tools clicks, average out the CTR by position across all of them, then take the broad match volume of all those terms (because that’s the only volume Google will give you), and then take your position and divide it by CTR and volume.
And viola! There’s your traffic by keyword.
Sound kinda crazy? It is. But it doesn’t have to be that way.
Find out more about the sad current state of SEO analytics, along with my proposal for change, in my latest Marketing Land Analytics & Marketing column.