Matthew Hurst at Data Mining points to his experimental site. d8taplex, a site for exploring data sets found on the web. The current state of the site only has 50,000 data sets from a few countries, with a limited set of visualizations and analyses available. He’s working on visual design, not on scaling up to full web search.
The experiment looks promising, and I hope he finds a way to hook up the high-quality graphics to a good indexing of available data sets Web-wide.