I learned some helpful tips for measuring the impact of online video from Robert Greenwald (Outfoxed, Brave New Films, etc.) at today's Center for American Progress Internet Advocacy Roundtable. Regardless of how punchy and informative your video may be, it's critical to know that it is contributing to the change you seek. Some highlights:

• Does the video point viewers to a clear and measurable action - for  example a petition to sign? This can be easy to track. (Although I'll add it's handy to know how people were directed to the petition website - did they see the video, read a press article, etc. Consider creating distinct URLs for each 'ask', enabling you to track where your traffic is coming from...)  
• Monitor the number of 'views' on YouTube. How does it compare to other videos your organization, allies or competitors have done?
• Watch your Google ranking. This is a useful indicator of how well you're helping "define the story". 
• Measure how many blogs are linking to your video

What other tips and tricks do you use? Surely many of us have struggled with this exact question...

And watch for more tips on using video for advocacy as we build out this section of our 'Training Center' in the coming days...