Improving the productivity of knowledge workers is one of the most important challenges for companies that face the transition from the industrial economy to an economy based on information and knowledge (Drucker, 1999). However, most "knowledge management" efforts have failed to address this problem and focused on information management instead. This paper briefly explores the failure of traditional knowledge management to adress the problem of knowledge worker productivity and argues that a deeper understanding of knowledge work is necessary to improve it. It then explores knowledge work and how it is supported with information technology tools today, focussing specially on the email client as a knowledge work tool. The paper introduces weblogs as personal publishing tools for knowledge workers and shows how personal publishing supports knowledge work processes, is personally beneficial to the knowledge worker and helps the dissemination of knowledge through an organisation.