Plagiarism is an interesting topic in education because it seems to mean different things to different people and to different cultures. As an instructor, I personally encounter it frequently; it is not always just cheating by the way, sometimes students truly do not understand.
Anyway, a tool that is frequently used in institutions is Turnitin.com, and I want to share an interesting article I read about Turnitin:
“A Booming Business Based on Plagiarism”
Dr Flavius A B Akerele III