A Google AdWords advertiser on DigitalPoint Forums mentions that his landing pages -- which he uses specifically for AdWords (thus far) -- have been creeping up in the search results, and he feels that the additional clicks are interfering with the continuous need to test and retest his AdWords campaign. He wonders if he should prevent these PPC pages from being crawled by the spiders and only use them explicitly for his AdWords campaign.
It is suggested that instead of preventing decent traffic that might yield to conversions that he instead look for a decent analytics package to differentiate between the types of clicks so that they can pinpoint whether the clicks came from an organic search result or from a sponsored listing:
Most decent stats packages will allow you to differentiate. If you don't have a stats package, you can use Google Analytics for free.
Discussion continues at DigitalPoint Forums.