1. Personal safety-the importance of not providing any form of identifying information over the internet. Also, not posting pictures that might include backgrounds or scenery that could be easily identified by individuals not otherwise associated with their lives in a positive way.
Don't post anything on the internet that you would not say in front of your parents, or in front of your teacher.
EVERYTHING that you post on the internet follows you, forever.
3. Probably by anonymously sharing some of the inappropriate remarks that I've had to remove from my edmodo and explaining that the students involved did not receive credit for the assignments.
4. Probably in a similar way that I would share it with the students, except that it might happen on meet the teacher night, and be posted on my teacher webpage.