Why do you use Twitter?

Tonight I will be sharing with IPACA colleagues the power of Twitter and how it can be harnessed by teachers as a tool for learning and C.P.D. I hope to record this presentation and upload it to this Blog at some point. In my preparation for this training I asked my PLN (Personal Learning Network) on Twitter how and why they use the social networking service as a teacher. Below are some screenshots of the responses I had.