ASsessment tools and assignments can easily be plagiarized in an online environment. To avoid this, you must include not only multiple chocie questions but short essay answers as well withcontent from the class that is unique to the class. This will discourage any outside source theft, if the tests and assignments are customized specifically to the content of the course. For instance: When teaching a course on Shakespeare, a posting assignment could ask for reflection or commentary on the overall ideas regarding, "Shakespeare, the Man," culled only from the discussions in class. This could be shared in the blog or posting area. Only class-issued parameters would help to avoid plagiarism. ANy other sources brough t in from outside would be cited. How do you keep material within the parametrs, and discourage siblings, friends or paper mills from assisting with the assignment? You keep the assignment class-based.