Structured in three sections, this book contains ten recent research studies developed by university teachers and researchers, with important experience in this emerging social media technology. The first section is a state-of-the-art review of microblogging, analysing the architectures and educational uses of a number of centralised and decentralised platforms. Twitter, the most known microblogging platform, is the topic of the second part, while other platforms, such as Twiducate and Cirip.eu, are presented in the last section. List of Contributors: Thomas Altmann, Filippo Bruni, Ilona Buchem, Linda Castañeda Quintero, Vladimir Cretu, Martin Ebner, Fei Gao, Gabriela Grosseck, Carmen Holotescu, Malinka Ivanova, Tatyana Ivanova, Tian Luo, Maria Perifanou, Selver Softic, Ricardo Torres KompenEditors: Carmen Holotescu, Gabriela Grosseck, Antonio Calvani, Filippo Bruni