You'll also see reference to a "face cord", which is a stack of wood cut to whatever length, but the face of the pile (ends of logs) measures 4 feet by 8 feet. For example, a "face cord" of 16" wood is 1/3 of a cord, a "face cord" of 24" long wood is 1/2 cord. Around here, it's illegal to sell firewood in any unit except a cord or fraction thereof. Still the local hacks sell by the truckload, pallet, "face cord", rick, rack, paddywhack. Okay, made the last one up, but the point of standardizing on 128 cubic feet (4' wide by 4' high by 8' long) was to avoid confusion. You wouldn't buy a "face gallon" of gas, so why buy wood in non-standard units. I think that some guys (and yes, it's usually guys) who will say they cut 10 cords of wood an hour, when it's 10 FACE cords, and usually light on those.
Do you guys use a cubic meter, tons, or what? Actually, weight would be the most accurate way if you could accurately check the moisture, since wood contains roughly the same BTU's, pound for pound.
Edit: MP beat me to posting, but a face cord is NOT 96 cubic feet, it's a stack of wood 4 feet high by 8 feet long, by whatever length the wood is cut. In other words, 32 square feet of FACE, hence the name, and also why you can't sell a volume of wood by a measure of surface area.