Snap Preview - Site Preview For Any Link

I happend to visit IamNotADoctor.
Its there I first saw Snap Preview Anywhere.

Snap Preview Anywhere displays a preview of ANY site that is linked to from your page. Your site visitors can now visually decide whether a site is worth visiting before actually clicking the link to go there.

Few examples : [ just move your mouse over the link ]
YouTube
Wired magazine
Technorati Blog Search
BBC

The good news is ... its FREE !!
All you need to do is to paste a piece of Javascript just above the </HEAD> tag.

Is it not Deverastic !!??