This study investigated how individuals' reading and writing habit levels contributed to their levels of learning effectiveness while participating in a learning blog. A survey was conducted to understand the relationship between individuals' reading and writing habit levels (i.e., heavy or light) in terms of their attitudes and behavioral patterns, on the one hand, and the level of learning effectiveness (i.e., high or low) in a learning blog. Toward this end, a total of 73 readers and 56 writers participated in a blog, "Learner's Digest", developed for the purpose of the study with informative blog posts to facilitate meaningful learning. Hypotheses were tested and data were analyzed using logistic regression analysis. The results revealed significant relationships between heavy reading and writing habits and learning effectiveness. Discussion of the results and the implications of this study are also presented.