Ethics are more important now than ever when it comes to the non-stop 24 hour news cycle. Some of my favorite links include:

Poynter’s 10 Questions to ask for Good Ethical Decisions
Online Journalism Review Ethics Wiki
Committee of Concerned Journalists Online Journalism EthicsDigital Media Ethics from the Center for Journalism Ethics

And just in case you haven’t read it through, I strongly recommend you spend time with RTDNA’s Social Media Guidelines

Also – here’s where you can learn more about Creative Commons.

I’d also like to suggest checking out the “New Guide” created by students last year that offers ethics and teaching tips when it comes to the use of social media in newsrooms.