true_INFP - 9:51 pm on May 8, 2010 (gmt 0) [edited by: true_INFP at 9:56 pm (utc) on May 8, 2010]
Previous interactions with the advertiser: Searches on google and websites with AdSense ads
Where did you get that from? It actually sounds like interaction with Google, rather than with the advertisers.
Based on the example in the AdSense help (and on the definition of the word interaction), they need you to click through to the advertiser website to call it "interaction with the advertiser".
Sounds very limited. Practically a non-issue.
[edited by: true_INFP at 9:56 pm (utc) on May 8, 2010]