A dynamic progress in development of ICT technologies based on B2B, as well as their application in order to improve business processes carried out between enterprises and their business partners, have gained much importance during recent years. It was influenced by such factors as developing...

The amount of business taking place in online marketplaces such as eBay is growing rapidly. At the end of 2005 eBay Inc. reported annual growth rates of 42.5% [3] and in February 2006 received 3 million user feedback comments per day [1]. Now we are faced with the task of using the limited...