Snap Preview Anywhere is neat

Just bumped into Snap.com, which has a nice link preview system. If you put your mouse cursor over a link on a snap enabled page you'll see a floating preview of the linked page. That is, in most cases, e.g. when the snap search engine (which is pretty neat too) has a preview of the linked page in its system.

Easy to add to Blogger, avaible for other major blog systems, too.