A seller can make right decision only if they get precise information in a required form at the right time. To this goal, recent development of information systems is oriented to business intelligence. Business Intelligence is rapidly becoming a major source to achieve competitive advantage and often aims to support better business decision-making, among others, in the industry. Data in the unstructured format (data from multiple marketplaces) can be processed by the use of BI systems and then valuable information can be obtained for the purpose like decision-making. This helps the seller to find new customer segments, analyse trends or uncover new business opportunities and opportunities can be sector specific.