Can someone point me to a solid sample app that shows how to use the new features and syntax of Rails 3?
It's been answered before for earlier versions (https://stackoverflow.com/questions/248371/whats-the-best-open-source-ruby-on-rails-project-to-learn-from), but I have not seen one for Rails 3.
Specifically the following:
You might want to check Projexion. It uses Rails 3 beta 3.