Why you use more than one screen in your workspace?

Hi, i saw many workspaces on dribbble and themeforest forum and many times users shows two screens or pc + laptop. The question is, how to use second screen ? My friend Vasterad said that one screen is for photoshop and second for facebook and the is no more options This is the question to graphic designers only.

I often have the browser open on one screen, and code on another. It means I can save the code and instantly refresh the output, without switching between windows. Sometimes I just use it for Facebook or music though

just went dual screen yesterday and it’s awesome.

Code on the left, output on the screen, combined with live reload = awesome

1. code editor 2. active project browser 3. terminal + second browser + stuff

Photoshop / Espresso App on one screen and the output on the other. Also switch it up when I’m dealing with retina assets (Retina MBPro).

I almost use my laptop but sometimes I use extended screen just for responsive designs and use one for inspectelement (maximum mode) and chrome