Recently I was browsing online for information on the new Search Features for SharePoint 2013 and came across a fantastic Conference Meeting that had been Recorded on the MSDN Channel 9 Website.
It goes on to explain the key changes and benefits of Searching including Result Sources, Query Rules, Promoted Results, Blocks of Results and it just blew my mind how simple it is do to.
So im Sharing this Link for all to watch as it will instantly show you the benefits of Search in SharePoint 2013 :
Making Great Search Based Applications with Query Rules in SharePoint 2013