Myth: the app store will protect you and prevent user confusion

An interesting thing happened with the Apple AppStore this weekend:

This weekend, as hundreds of thousands of people explored their iPads […] they found […] an application called Facebook Ultimate, featuring a sleek version of the familiar ‘f’ logo. The application quickly rose through the ranks to become one of the App Store’s top selling iPad applications. Unfortunately, it soon became apparent to these users that the application simply wasn’t very good, and that it wasn’t created by Facebook at all.

[…]

the $2.99 application rose to become the #7 top paid app on the App Store. The app received many poor reviews from upset users, plenty of which warned others that this was not the app they were looking for, but that apparently didn’t stop people from downloading it.

Tell me again how the App Store protects users?