That screen shot has *got* to be across two monitors. I wanted to do something like that when I found out that my iMac could use my old PC's monitor as a second display. Unfortunatley it can't spread WoW over both monitors :(
with mods like XRS to track buffs .. which you can track _every_ buff through it... the need for showing buffs is kind of just up to the user..
i dont see why it would be required to display them... if anything change the color if they are DEBUFFED... but who cares if they're amplify magic shows up in the unit frame? while nice for some frames its not that useful... use XRS if you wanna know..
Anyways.. i could see an incredibly clean UI using those vertical frames... but thats DUF and the devil and me dont play well