MetalSite, an early e-marketplace entrant, has teamed with powerfulnewcomer MetalSpectrum, Atlanta, in a deal that stops short of a merger butfinds the two industry marketplaces sharing customers and cooperating onsupply chain applications. Pittsburgh-based MetalSite was a so-called"coalition" marketplace before such constructs became popular. Itsinvestors include big metal companies, among them Bethlehem Steel Corp.,LTV Steel, Ryerson Tull, Steel Dynamics Inc., Weirton Steel and InternetCapital Group. Up to now, its competition has come from independent Netmarket e-Steel Corp. But the launch of MetalSpectrum earlier this yearbrought on a new powerful foe, with the backing of companies such as AlcoaInc. and Kaiser Aluminum. MetalSite and MetalSpectrum fit together well.MetalSite focuses mainly on prime and formed steel, while MetalSpectrumaims to trade mainly aluminum, stainless steel, copper and brass.