There is e-learning training need among teachers; therefore in-service training should be delivered. The problem was, was it better to deliver this training as blended or as online? And does such training differ according to the teachers using Second Life or not using Second Life? The study group consisted of 74 primary school, high school and university English Language Teachers, who are enrolled in Turkish Republic of Northern Cyprus, The Ministry of National Education, Youth and Sports, and whose ages differed between 21 and 61. 37 of them attended to the online course and 37 of them attended to the blended learning course. The number of teachers who have joined to the Second Life classes were 37 and the number of teachers who have not joined to the Second Life classes were 37. In the research study pre-test and post-test experimental design is used. As a result, a significant difference among the success of the English Language Teachers who have joined to second life, and who have not joined to second life is found. This is a very important result. Further researches are necessary to find out if Second Life can be used in other disciplines. If the proper delivery methods is used both blended and online education will be successful. [This paper was presented at the Cyprus International Conference on Educational Research (CY-ICER-2012) (North Cyprus, Feb 8-10, 2012.)]