I found a pretty cool site that uses visual logos to store your bookmarks called Koobimark. It's best to create an account and from there you can make categories for all your bookmarks and display them. You can either search for links or "koobies" on their site or create your own and fill up the categories you make as you please.
You can also import your existing bookmarks, so it's all ready to go. It will even find pictures for you, though some of them don't get read, but it's no big deal.
Seems like a step in the right direction for visual search and definitely better to look at when compared to just normal text links. It's still pretty new, in the alpha phase, so I'd like to see how it evolves.