This qualitative case study describes a unique online professional development program utilizing Web 2.0 technologies for teachers of German using the Technological Pedagogical Content Knowledge (TPACK) model as a theoretical framework to promote technology literacy, expand German language proficiency and cultural knowledge, and integrate standards-based best practices in the teaching of second languages (Mishra & Koehler, 2006). Data sources included interviews, open-ended questions, course documents, and audio-visual products. Upon triangulation of these data, the following themes emerged as effective strategies in designing professional development programs: hands-on experience; convergence of technology, pedagogy, and content; discussion and reflection on pedagogy; and technology implementation into the classroom. These themes and strategies can aid in designing future effective professional development programs for language teachers, teacher educators, and school districts. (Contains 1 figure, 2 tables and 1 note.)