The effort required to implement bcrypt in new systems is indeed small, and such a method is the suggested way to do, but depending on the amount of users, the effort required to port an existing database over to bcrypt (e.g., Facebook) could be immense, and the result disastrous if not done with great care.
Ptacek said, and I quote, "... a crappy web app ..." so why do you only cite me as making the "incorrect assumption that only poorly written web apps have their databases compromised?"
Again, I agree that is the case in new systems, but I disagree that one is "effed," as the article puts it, if they have a large database of salted hashes.