I found a very interesting project from David François Huynh, developer of some impressive projects over at Simile. Parallax offers a new way to browse and explore data on Freebase, one of the largest open and shared (structured) databases of knowledge on the web.

Freebase Parallax: A new way to browse and explore data from David Huynh on Vimeo.

I also discovered a somewhat related research project at Stanford called Vispedia.
   

I’ve discovered a number of interesting applications that help people efficiently organize information. There certainly is no shortage of solutions for this problem domain. Many tools exist that offer the ability to discover, save, organize, search, and retrieve information.

Discovered this while Googling for Semantic Wikis and Personal Knowledge Management (PKM)
Abstract. The use of semantic representations in document-oriented
environments – as formal annotations or embedded instances of a formal
knowledge base – is seen as an enabling technology for intelligent services
which may help knowledge workers in tasks like finding, structuring, or
assessing information. A very high level of formalization may even more
directly support problem solving, e.g., by the application of inferencing
services. A coupling of textual and formal representations in document-
centered knowledge work raises, amongst others, two questions: i) How
can the acquisition of …

Interesting presentation of Topic Maps and the Semantic Web.  Plus, some background info on HyperText, Vannevar Bush, and the Memex.
Topic Maps and the Semantic Web - Ontopedia
Publish at Scribd or explore others:
   

Since I last posted about Vannevar Bush’s vision for a Personal Memex, I decided to focus my efforts on building an impressive personal travel journal, and share the results to illustrate the capabilities of a Memex.