Everything I found on digital citizenship, ethics etc.

Learn the Ropes on Digital Citizenship (wiki) - Many useful resources here (websites, interactive games, lesson ideas etc).

100 Tips, Tools and Resources for Teaching Students about Social Media (by Tara Miller)

Couros wiki - Excellent compilation (online safety, ethics of copyright, cyber-bullying etc)

Digizenship - Excellent wiki with resources for each grade level

Creative Commons video