Editing Wikipedia is something we encourage teachers to do in our book Flattening Classrooms, Engagaging Minds and in our Certified Teacher Course. All of us should at least have a user page. Tasha Cowdy, one of our certified teachers shared her experience editing an orphaned article on Wikipedia. This is something all of us can do to learn about the community of practice built around a sustainable site like wikipedia.
There is a new type of wiki called the "federated wiki" that is the new brainchild of wiki inventor, Ward Cunningham. INfluenced by GitHub, this invention lets you "fork" a wiki page and make your own version with the original author having the choice to integrate your changes or keep it separate. This may be a great type of collaborative writing tool for researchers and academicians who often are concerned about adding to a common repository in that the page could evolve to no longer represent their views but their name is still affixed to the page. On the other hand, those who may not understand it, might incorrectly attribute something that has been forked and edited but not approved by the original author. I like the potential, however. For those of you who do collaborative work, this is an excellent read.
An excellent, useful post from Silvia Tolisano with practice information and graphics about using Twitter in the classroom. This is a must read in edtech classes and in professional development for teachers. Pass it around and learn. In it, she quotes Terry Heick of Edudemic who divided tweets into 3 sections relating to higher order thinking skills: watch, talk, produce. Excellent, useful points about using Twitter in the classroom.