It isn't a secret that giving the user feedback on a link hover (image swap/sprite, link color/decoration change, etc.) is a necessary practice for optimal UX.
In css-tricks.com's recent redesign, they included a css box-shadow hover effect that applies to an entire container, whether a link is being hovered upon or not. To see for yourself, visit CSS Tricks and play around with the boxes on the right column.
I happen to be a fan of this container hover effect (although I think it could have been executed more subtly), even though the item that is being hovered upon is not a link.
My question is: Should this type of hover feedback be limited to the traditional method of feedback-on-links only, or does this more modern approach add to the user's focus in highlighting the area they are concentrating on?
Here is a screen-shot of an e-commerce site I'm in the midst of developing. Note that bottom box (2nd-to-right) item is being hovered, and a light box-shadow effect is applied to the entire container.