I recently came across a new startup product called import.io. The product provides a site wrapping tool which allows anyone to create wrappers for sites with repeated structured information and thereby access the data on the site. For example, one might wrap a business listings page, a hotel review site or a weather site and convert the data into machine readable form.
I certainly recommend visiting the site and experimenting with the tool. However, I note that in 2000, WhizBang!Labs created a product called Wrapster, in 2006 Dappit / Dapper created a similar tool. Site wrapping is not a new idea, the technology is reasonably well understood (though the UX that guides a user through wrapping and data collection is challenging), so the question is really what is the business model? and will import.io survive where others with identical technology have failed.
I'd be interested to see how a data analysis and presentation product, like Tableau, could leverage large and varied data sets to enhance their products and whether a community of wrapper creators embeded in their customer base might provide something of a data gathering social network.