I'm really curious how they will count ad impressions in this new system. Can anyone find any comments on that? Google is CPC, but the number of impressions has a dramatic impact on price.
Excerpt:
When someone searches using Google Instant, ad impressions are counted in these situations:
* The user begins to type a query on Google and clicks anywhere on the page
(a search result, an ad, a spell correction, a related search).
* The user chooses a particular query by clicking the Search button, pressing
Enter, or selecting one of the predicted queries.
* The user stops typing, and the results are displayed for a minimum of three
seconds.