I have been a "Crossfire" user since the very beginning with the Radeon x800 series where you needed a master and a slave GPU.
Before that... You had the ATI Rage Fury Maxx which was a dual-GPU card back in the late 90's... ATI didn't call it crossfire then though.
I also had a pair of Voodoo 2's in SLI as well at one point...
It's sad that Multi-GPU setups are being pushed aside, but it is what it is, probably wouldn't be an issue if AMD had a super high-end performing GPU though.
--::{PC Gaming Master Race}::--