A few years ago, I heard about some teachers who were "reversing the classroom" by posting their classroom lesson videos on YouTube. Students would watch the lessons at home and then do their "homework" in class. This gave the teacher a more effective opportunity to help students work through the lesson's problems, rather than the students' parents. It seems like a good idea for more affluent school districts. However, one teacher I know, with ties to the Kibera slums in Nairobi, quickly pointed out that it wouldn't work in all areas.
I went to a military college which had a tightly organized student body where we maintained file cabinets of past exams and quizzes. If a professor gave the same test as before then students would have a leg up. When I brought this up with a friend, he pointed out that a well know textbook rental company started getting into a similar business. When I hear of business ideas like that I ask myself, "Why didn't I think of that?"
Communal Note Taking
With apps like Google Docs, where multiple people can edit a document at the same time, students now use it for collaborative note taking during lectures. Brilliant.
Students can't cite Wikipedia as a source. But any decently written Wikipedia article will cite sources – so students can cite the original source.