Google +1 Button
In the same way that you can "Like" a website through Facebook, you can "+1" a site or advert through Google to show that you approve of it.
According to Google, "the +1 button is shorthand for 'this is pretty cool' or 'you should check this out'."
To use Google +1 you have to be logged in with a Google public profile. You then click the +1 button to give a site your public seal of approval. If your friends or contacts have already +1ed something then it will show up which friends have recommended it. If someone +1s your site then it appears in search engine results like this:
The more +1s a site has, the more it will be seen as a vote of confidence in that site, and Google have indicated that this, along with many other ranking factors, will help you rank well in their search results. Therefore, +1 not only makes your site look popular and well liked to potential clients and customers, but also might help you in the natural listings on Google.
We'll also start to look at +1's as one of the many signals we use to determine a page's relevance and ranking"Source: http://googlewebmastercentral.blogspot.com/2011/03/introducing-1-button.html
Depending on the technology you use, DBS Internet Marketing may be able to add the +1 button to your website so that your visitors can click on it to recommend your site.