The deployment of B2B eMarketplaces, is enabling a more efficient and frictionless flow of information, goods, services and payments between businesses. By building liquidity and addressing inefficiencies in B2B supply chains, facilitating transactions and improving business processes, these virtual markets provide a compelling value proposition to business customers. However the decision whether company should participate in e-market should be based on advanced knowledge about e-markets models and functionality they provide. This paper offers an analysis of existing e-marketplaces’ business models to provide better understanding of this new phenomenon of e-economy.