If you want to enhance the experience of browsing your web sites, just add "Snap" to it. It's free, fast, requires only a little script to be added anywhere within the body area of your page and everything works automatically.
Lots of stuff to customize; for example on this blog, all external links are marked with a little icon which shows a link target preview thumbnail.
On the user-side, if you quickly hoover the mouse onto the preview box, you can use a global search engine and customize or even disable it.
Good example: Links page of this blog.




