Employing an architecture of visual relation (similar to the visual thesaurus, which I've never really liked, and AirTightInteractive's flickr tag browser, which I'm ka-razy about!), LISTA has a "visual search" tab that presents findings in tidy atomic clusters:
in the mirror larger than it appears)
If you mouse-over the little wheels of gumballs, you get details on each item.
Even though the seeming immaculateness of such proxemics are fictitious, I find it nice to "see" potential sources as space-consuming entities.