| Content of Issue 4 | 
| Managing Editor's Column | H. Maurer | 505 | 
| Optimizing Assignment of Knowledge Workers to Office Space Using Knowledge Management Criteria The Flexible Office Case
 | R. Maier, S. Thalmann, F. Bayer, M. Krüger, H. Nitz, A. Sandow | 508 | 
| Analyzing Wiki-based Networks to Improve Knowledge Processes in Organizations | C. Müller, B. Meuthrath, A. Baumgraß | 526 | 
| Success Factors in a Weblog Community | C. Safran, F. Kappe | 546 | 
| Compensation Models for Interactive Advertising | A. Dickinger, S. Zorn | 557 | 
| A Linear Time Approximation Algorithm for Ruler Folding Problem | A. Nourollah, M. Razzazi | 566 | 
| Publication Bias in the Computer           Science Education Research Literature | J.J. Randolph, R. Bednarik | 575 | 
| Spatial Queries in Road Networks Based on PINE | M. Safar | 590 |