With globalisation and the advent of information technology, the English language has become more important for second language (L2) learners. This study aimed to establish a blended teaching and learning model combining online and face to face instructional blogging for an English for specific purposes (ESP) course named "English Public Speaking". The research methodology combined qualitative and quantitative approaches and included peer and instructor feedback, interviews, self-reflection, and a learning satisfaction survey. A total of 44 college seniors majoring in English participated in the study. The results of the study showed that this model could contribute to learning effectiveness and student satisfaction if the blended model is implemented with sufficiently supportive equipment and course plans. Most importantly, peer and instructor's feedback and the blog characteristics like free access, ease of revision, and interesting material for learning were major factors that enhanced students' learning satisfaction by motivating them to learn effectively. (Contains 3 tables and 5 figures.)