Thanks for the kind comment. You've discovered the reason for the slight rebranding in the title, which is now Learn Web Development: The Ruby on Rails Tutorial

Thanks for the kind comment. You've discovered the reason for the slight rebranding in the title, which is now Learn Web Development: The Ruby on Rails Tutorial. I feel that with this 3rd edition the tutorial has definitively transcended its original niche, and no longer principally constitutes an introduction to Rails per se. This is also why criticisms of the sample app (e.g., a Twitter clone) are off the mark: all but the final two chapters are geared not toward a particular app, but rather to the general problem of web development. The last two chapters exist mainly to introduce some non-trivial data modeling, but once you have the foundation in place, you're ready to start building whatever kind of application you have in mind.