Yes but I think Google possibly are being disingenuous here. Yes its negatively impacted by some search quality improvements, but is it NETT negatively impacted, or is it also positively impacted as well.
After all, you are displaying ads that someone has paid for, so if someone isn't clicking on them, then maybe the content is no good for the ads (ie poor quality). Likewise you can tell by how much someone will bid on the keyword how valuable the content is.
After all, you are displaying ads that someone has paid for, so if someone isn't clicking on them, then maybe the content is no good for the ads (ie poor quality). Likewise you can tell by how much someone will bid on the keyword how valuable the content is.