Here’s an interesting mashup: Wikipedia Roll. I’m pointing to the page for “Usability” but you can search on any term.
Looks like they are doing some type of entity extraction to cluster facet-like groupings of concepts on the fly. That’s cool in and of itelf.
I also like the UI. It’s a type of visualization that doesn’t rely too much on graphic or visual representations of text, like with small balls or spider graphs. Instead, you interact directly with the concepts and labels themselves.
EXPERIENCING INFORMATION 