Ad Sitelinks allow you to extend the value of your existing AdWords ads by providing additional links to content deep within your site - displaying up to 4 additional destination URLs on your search-based text ad for users to choose from.Starting this week, Ad Sitelinks will be eligible to appear on select search partner sites in the same format as they currently appear on Google.com. Not yet taking advantage of Ad Sitelinks? Its a good idea to set them up!!This means Sitelinks could start appearing on site such as ask.com/aol.com/Amazon and many more.