“…The second generation put the first generation tools to work in an operational setting. The third generation emphasized popularity measures such as links, usage and time as well as the use of parallel computing power and advanced search techniques (Hanani and Frank 2001). Through the use of meta-knowledge, the documents become more like databases where search, retrieval and reuse of text elements (explicit knowledge) are promoted while also giving the reader the opportunity to contact the source of the knowledge so that they may have a dialogue to enable tacit knowledge transfer (Braa and Sandahl 2000).…”