wikis, patents, or project presentations. Secondly, there are many different user types with very different requirement profiles, e.g., sales, HR, service, or engineering. Thirdly, there are difficult issues concerning data security. </span><span style="font-size: 12pt; color: blue; font-family: 'Times New Roman','serif'"><o:p></o:p></span><span style="font-size: 12pt; color: blue; font-family: 'Times New Roman','serif'"> <o:p></o:p></span><span style="font-size: 10pt; color: blue; font-family: 'Arial','sa