I’m not usually one for adding all sorts of ‘gadgets’ to my pages, I leave that to the MySpace crowd, but the Snap Preview Anywhere tool is different.
By adding a small bit of javascript code to your page it enables a pop-up preview of pages that you link to from your site. When you hover over a link it generates a small balloon window with a thumbnail image of the page to which the link leads.
I’ve just installed it here on my blog and it worked well out of the box for external links. The internal links however generate no pop-up balloon by default. A quick visit to the FAQ provided an answer in the form of an additional parameter to enable previews of internal links. Sweet.