Google Indexes AdSense Copy

I noticed that AdSense ad copy gets indexed and shows up in Google's main search results. Are there any particular implications? If you bought an AdSense ad on a high-ranked site (can you?), would it push this site up in the search results for the keywords in the ad copy? 




Copy in an AdSense ad on DomainTools: "Build Your Site from Scratch, Redesign, or Enhance. No Setup Fee."


Google's search results for the phrase. The DomainTools page with the ad is third result from the top, but other sites featuring the same ad appear in the index as well.