This triple monitor mount is $114 for Black Friday on Amazon (24% off)

Freely mount three displays and free up your desk space with gas spring monitor arms, now $114 with this Amazon Black Friday ...
Ars Technica

How to add third/fourth monitor

I purchased a Dell Studio 435 MT on the salesman's representation that I could put two video cards in it. He lied. The unit came with an ATI Radeon installed, and they sent me another card to put in.
Ars Technica

Need a video card recommendation to add third monitor

I am running Win 7 Ultimate, x32. I currently have a Sapphire ATI HD 4870 512MB card in this machine running dual monitors (30" and 24"). I would like to add a third monitor. I am just a casual gamer ...
Cult of Mac

DeskBook Pro Adds Ports, Storage and Third Monitor Support to Your MacBook

If you want to give your MacBook more of the oomph of a desktop, the DeskBook Pro dock from Zemno would be a neat little solution… except for its mind-boggling expensiveness. Like most laptop docking ...