MORE ON PLAGIARISM: Gad I pity anyone plagiarizing in one of Horace Jeffery Hodges's classes. He has wonderful advice on how to hunt plagiarizers down in his latest post on the subject. (Be sure and follow the links for earlier posts and a reply by Mark Goodacre.) I'll have to link to this stuff again next semester when the essays for my Old Testament 2 course are close to being due.
UPDATE (4 December): There's a helpful index of the posts here.