My brother asked me, why don’t I use three monitors. I answered that two are enough, because I have no use for the third one. But now, I have found the use for the third or maybe the fourth monitor connected to one PC.
Imagine that you have one folder with more than twelve thousands of icons, photos, pictures and general purpose cliparts. You can of course work on it and sort them to the subfolders, but it will take many days to complete this job. And when you have subfolders, you can’t browse in all thumbnails, so your creative powers will be constrained.
Browsing in all those thumbnails is the definitive job for many monitors. So, if you plan to become a famous web graphics designer, let’s buy at least four monitors.