Google’s Webmaster Help YouTube Channel has a great video that talks about Google Sitelinks and how to control them on your site. Sitelinks are the additional, in depth search results that Google sometimes returns for the top result on a search query.
…

Today’s world is busy, with many different concerns competing for attention. So, when people go on-line to find information about a product or service, they want to search for and find it in the bare minimum amount of time, often clicking on the first search result that comes up and appears to get them where they want to go.
Google’s
The search engine market is quite a crowded place. Google, by far the dominant search leader, has a massive 65% market share. Yahoo comes in at a distant second, so far back that they had to make a deal with 3rd place Bing in order to share results and ads , making them big enough to compete.
Search engines such as Google use several different elements when determining the website’s authority and reputation. One of the strongest indicators, however, is the number and quality of links to the site from other external websites. In simple terms, this system is very similar to a voting process.

