I believe that all teachers should have a way to reach out to others, and build a Professional Learning Network (PLN) of like minded educators. We all have interests, problems, questions, and need advice. There are many ways to build this PLN, and there are many educators using Twitter. Twitter is an online social networking service that enables users to send and read short 140-character messages called "tweets". It is a microblogging platform, which allows you to post and show what you are doing, ask questions, and follow an interesting feed of information. Many people use Twitter to: Share ideas Develop a PLN (Personal Learning Network) Connect and collaborate with people Reflect and engage in dialogue with others Access to new resources...every day Follow interests Expand your professional development Here are some common definitions of commonly used terms in Twitter. #tags (n): hashtags are markers placed in a Tweet that can be traced by other