The obvious difference between this project and CD rippers (a device to which they compare themselves many times on the site) is that the CD ripper is basically

The obvious difference between this project and CD rippers (a device to which they compare themselves many times on the site) is that the CD ripper is basically "fire-and-forget", while this seems to be an intensely manual process. The site quotes a scan rate of 600-1000 pages an hour, which means it will take roughly 30 minutes of uninterrupted work to "rip" a typical novel. Until the process is completely automated (and I don't see why it couldn't be), it seems like too much time invested for too little payoff.