Echelon has posted some nice experiments using 3d tools for visualizing a social network. It's early days, so worth keeping an eye on to see where this work goes. I've taken the liberty of embedding one of the video here....

(NSF 07-516) Full Proposal: February 5, 2007

The Discovery Corps Fellowship Program is an extended pilot program seeking new postdoctoral and professional development models that combine research with service-oriented projects. Discovery Corps Fellows develop integrated plans that incorporate an ambitious research project with other activities that address areas of national need (including enhanced research capacity and infrastructure, workforce development and job creation, and innovative linkages between chemistry and other fields). For More ...

A December 2006 survey has found that 28% of internet users have tagged or categorized content online such as photos, news stories or blog posts. On a typical day online, 7% of internet users say they tag or categorize online content.

A different take on people building the semantic web.