Today the #1 productivity platform in business is still Microsoft Office. A typical „knowledge worker” creates documents, spreadsheets, presentations on her/his desktop, tries to maintain order by diligently filing them under an ever-growing directory-structure and shares the information by emailing the files around. When several co-workers need to contribute to a document, version chaos ensues. Document management systems are supposed to ease the pain, but they are big, expensive, and surprisingly (?) only 5% of office workers actually use them.