kidder - 9:01 am on Aug 4, 2008 (gmt 0)
Good topic, I don't think a ranking that you see means that your site is getting served for all of those 40k per month searches. Just because you see your site rank even in the top 10 does not mean the person down the street sees the same set of results. I think organic search rotates a lot more like adsense does, to some extent google is sharing the love based on a lot of different varialbes, location, search history might be a couple of examples to consider. I'm happy to be shouted down on this as it's based on what I think not what I know to be fact.