Google has introduced a new look to its AdWords Sitelinks by adding a small arrow on the left side of where the sitelinks begin.

A Google spokesperson confirmed that these new sitelinks are currently rolling out everywhere this week.

The screen shot below shows both the old and new look of Google Sitelinks.

Google Sitelinks appear with your ad on Google.com, and in some cases across the Google Display Network. Adding sitelinks is free, although you are still charged per click on your ad. They give potential customers more reasons to click on your ad by including additional information within your paid search ad.

Google has expanded ad extensions with Social extensions, Dynamic search ads, location extensions, product extensions, call extensions and seller ratings.  In addition, Google may be introducing additional Ad Extensions in the future.

To enable Sitelinks in your Google AdWords ads, click on the “Ad Extensions” tab within your Campaigns tab.

Google AdWords has been rolling out new ways for advertisers to use Ad Extensions – from its recent launch of Social Extensions from Google+, to tried and true Sitelinks that give advertisers more innovative ways to link to their website from their AdWords ads.

Most recently, I have seen ads that Google is calling a “Mega Ad Sitelinks Experiment”. It looks like there are three ads, but all three ads are tied to one advertiser:

Google says that Mega Ad Sitelinks is currently in beta and will only appear when there is only one top ad. Google adds that it is happening to current ads that have Sitelinks already implemented and is predicted to increase click-through rate (CTR).

The Mega Ad Sitelinks ad takes up a majority of real estate on the search engine results page (SERP) and also gives searchers more detailed and specific links. In the example above, the top ad includes information on generic jeep parts, whereas the bottom two ads include ad copy that is specific to jeep softtops and tire carriers for jeeps.

Google AdWords currently also offers the following Sitelinks options: Location, Call and Product Extensions. For more information on AdWords Sitelinks, visit the AdWords Help Center.