Hover your mouse over here. Do you see a preview of the site at the link? Neat, isn't it? Well, this is a tool designed by Snap.com which allows site owners to provide a sticky and sneek peek of the various links whick they have posted on their web site. I came across this snap preview thing when I was surfing some sites but did not know where it originated from until today.
Registration is a breeze and installation is quite a no-brainer. Best of all, it's free.