I was just thinking about it... Because it will follow as it cannot crawl so it wont render ads with sid?
I doubt it because in this case google is not going from page to page spidering but its being notified by the script itself that the x page exists... Ok, i probably made no sense.
I think Nokia's point is that ad content is determined by MediaPartners Googlebot spidering the page. If it doesn't follow links with SIDs (whether this is the case for MediaPartners Googlebot I don't know), does this hamper Google's ability to determine page content and deliver relevant ads? or is it able to determine "theme" by other means, like backlinks or whatever? Interesting question...