"Just as important as relationship building inside the four walls of your classroom is the building of professional relationships outside of your school, outside of your school district, and beyond your state, to the global community we are preparing students to enter. One of the best ways to build these relationships is through Twitter.
As a self proclaimed Twitaholic or Twivangelist, I am constantly emphasizing the importance of building a Professional Learning Network (PLN) through Twitter. Simply setting up a Twitter account isn't enough. You must make a concerted effort to find others who inspire, uplift and encourage and be willing to do the same in return."
Via John Evans