Sitelinks for paid advertisers on Google, also called Google AdWords Sitelinks, have been around for about a year now and if you are not already taking advantage of these fun ad enhancements, then it’s high time to do so.
Not unlike the Google sitelinks that show in the organic results, the extra links beneath your ad are meant to help users navigate your site in fewer clicks. The key difference between the Google sitelinks in the organic results and those that are shown beneath paid ads is that with the paid Google sitelinks you have flexibility to choose which pages of your site will show and you control the wording of those extra links. Google reports that advertisers are seeing average increases in CTR of more than 30% for ads with the standard two line Google sitelinks.