With the advancement of technology, writing in English is no longer confined to the classroom as nowadays students are exposed to various forms of writing on the Internet. Specifically with Generation Y in mind, online writing is a new method that needs to be implemented to enhance Malaysian students' writing skills. This article aims at identifying what motivates English as a Second Language students to write in English on Facebook. Ten Chinese-speaking students from a private urban school were selected for this study. These students had just started secondary education after being educated in Chinese-vernacular elementary schools for six years. The students were required to participate in an ongoing discussion on their Facebook class page in order to complete a writing task. Data for this study comprised both online discussions and interviews. The findings suggest that peer influence and school surroundings motivated the students to write better in English on Facebook. The findings also imply that the use of technology in writing tasks made students write better in English owing to the exchanges of feedback and ideas that took place through this social networking site.