The Web is already starting to replace some paper textbooks. I tried a Web and CD-Rom based text a few years ago that was horrendous. It needs serious work before it is usable. However, I'm using traditional paper texts now that have the entire text of the book available online for just the purchase of an access code, which is less than half the price of the paper text. For students who prefer having a paper text, they get the online access code for free with the paper text, so losing their text or having it stolen is no longer an issue. I like them because I do not have to carry two 10 lb texts home at one time. I just fire up the internet and go to work. Also, the online system has the same problems from the text put into an online format for giving online homework and tests. I hardly have to grade anything anymore, if I choose not to.