I have reviewed the Selenium Page Object Model and determined it is no better than the Germanium API in terms of abstracting away low-level locator actions like finding and clicking elements. POM provides no improvement to simplifying the locator strings for the Selenium strategies it uses: xpath, css.
When thinking about integration tests, a lot of people think only about the source code of the tests. Of course, seeing tests like that is not only wrong, but also might prove fatal for your testing infrastructure. Let's see why...
With the new release of Firefox 47, the WebDriver support was left in limbo. On one hand, the old WebDriver API is not accessible anymore, on the other hand the new API (Marionette) explicitly doesn't supports it.