InternetNews: InfoSpace Looks for Revenue Boost from Search Clustering

Infospace and Vivisimo (cluster vendor) claim that "…users click on 30 to 100 percent more paid listings when presented with search results organized into hierarchical folders using its clustering technology." I was unable to find an instance of the "clusters" referred to in this article, at least not in the portals and locations described in the article. It looks like they are referring to the search refinements on the left (the article talks about folders on the right). Well, this is nothing new and many portals use search refinements. A search on the Vivisimo site shows a simple categorization scheme. Is it a killer app? No. Will it drive revenues? Perhaps.