I've just implemented SnapShots on this blog, which means that hovering the mouse over the link will get you a cached image of the site it links to. Hopefully this will add value to your rhythmic lurking experience.
If you should find it annoying, it's easy to disable. When the SnapShot pops up, move your cursor to "Options" and you can modify it as you see fit.
Please note that disabling it involves the use of a cookie, and that if you delete cookies from your web browser you'll get the pop-up again.