There may be a whole lot of nostalgia tied up in the tree-based matter traditionally used to deliver the written word. But lots of new data suggest that once you've made the leap into the digital marketplace, you're going to spend a lot more time -- and money -- on books than you otherwise would. Amazon reports that its customers buy 3.3 times more books after they buy a Kindle . 11 million people will own e-readers by the end of month. E-book sales grew 183% more this year than last. And people seem to be reading in all sorts of new places, just because of the portability the e-readers offer. We know that we've been burying our heads in a lot more literature since we've been able to do it via 1's and 0's, but it's nice to hear that normal people have been reading more as well.[Image credit: LenEdgerly's flickr