The study investigates the impact of weblog use on individual learning in a university environment. Weblogs are a relatively new knowledge sharing technology, which enables people to record their thoughts in diary form and publish those diaries as web pages, without programming or HTML coding. The research sought to empirically determine whether the keeping of on-going (web based) learning logs throughout a semester would result in better overall student performance. This was hypothesized, because web based learning logs appear to promote constructivist learning, provide reinforcement, and increase accountability (non-anonymous idea sharing). Results from an information systems undergraduate course with 31 students indicate that weblog performance is a significant predictor for learning outcome, while traditional coursework is not. Weblogs appear to have highest predictive power for high and low performing students, but much less predictive value for medium performers. Results also suggest that there is a learning effect for weblog authoring.