That article is kinda old. Both Nvidia and ATI have implemented multi-monitor solutions in their current GPUs (NVSurround and Eyefinity, respectively); I don't think coding a separate multi-monitor rendering path into FSO would really be worth the effort. I use NVSurround, and it works perfectly in FSO with no extra coding necessary on the SCP's part, except to fix the HUD (which Antipodes 7 did) and the menus/main halls, which stretch across the entire visible area. This is really, really annoying, and should probably be fixed at some point if one of the coders has any spare time (however, to my knowledge, I am basically the only person on the board that uses three monitors, so...).