IMHO quintura improved significantly since my last visit a year ago. The interface is even more ajaxy and updates search results automatically depending on what you're doing on the word map. And it's good that they put the search results from bottem to the right.
As I said I wished for an interface like that to browse del.icio.us tags.
Well, quintura 
can do that now!
PS: To see their widget in action please view this posting on my blog.
More awesome stuff: