Snap launched one of these days a new service called Snap Preview Anywhere that allows bloggers and site owners display a preview of a link’s target as a tool tip. This seems to aim at adding AJAX style value to a site but without all the hard work. The service is embeded into your page through same JavaScript code that you must place in the <head> tag of your page. If you have a blog, editing the theme allows access to this area of the page, so you can take advantage too.
The only issue is now if you’re willing to allow snap.com take a peak at what links your users follow the most or you prefer to spend another hour or so coding the feature yourself.