A deeper explanation of Reference Extract

In the past few weeks, the word in library land about Reference Extract has been that it is some sort of response to Google by librarians pining to build their own search engine of librarian-approved web sites. It is, in fact, the first step to build something more grand and interesting than just another web search engine. You can get a better idea of what that thing is from David Lankes, who posted this video recently on his blog: