Page Object Model in Selenium I never had to test an application with Page Object Model, so trying to study up on that. Questions:   Is it true that it is only used when you need to enter different sets of data into the same edit field multiple times? Is it true that in fact there are more applications that don't use POM than applications that do? Do I understand it right that POM can be implemented without Page Factory and if so, when is it worth using Page Factory?
How to Implement Page Object and Page Factory Pattern in Selenium Webdriver? I am a beginner in learning selenium Webdriver. I am not able to understand how page object and factory models works and how it can be beneficial?    Kindly help me explain it with detailed explanation.
What is the default 'backup' user for? I am setting up multiple-machine backup plan and I was hoping to use a user called 'backup' on each machine as the backup destination.   My problem is, there is already a user called 'backup' on my machine.  What is it for, and can I hijack it for my own purposes?  root@frodo:~# useradd backup useradd: user 'backup' already exists