Norms and Responsibilites of Digital Citizenship

We need to teach students that Digital Citizenship is very important, both now and in their future.  Once something is published, it's there forever.  Things that are posted now may be available to future employers and family members.  We should think before we post anything, "Would I want my boss or my child to see this post?"  Things that seem fun and appropriate now may seem very different in 5-10 years.