Google has launched Ad Sitelinks for all AdWords campaigns. The feature was made available late last year for advertisers' top performing ads, but is now available via a one-line format for all campaigns. Google says advertisers who have used the format in the past have experienced big gains, and have boosted click-through-rates by over 30% (on average). "When a user's query matches a keyword in your Ad Sitelinks-enabled campaign,