Today's scientific research is mostly acquired and shared using internet resources. In this context web collaboration has become more important
these days. The paper presents the semantic knowledge wiki KnowWE that is used to capture and share ontological knowledge together with explicit
problem solving knowledge in an open web environment. We also sketch a scientific research project using KnowWE as a knowledge pool and we
show that distributed knowledge formalization poses new research questions concerning the quality and refactoring of knowledge.