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MoodBar	Pilot: Early data (July 2011 - September 2011)	Stage 1: Usage and UX (September 2011 - May 2012)	Stage 2: Impact on editor engagement (May 2012 - September 2012)
MoodBar Feedback Dashboard Mark as Helpful	First month of activity	Time to first feedback Response time Effects of UI changes Email confirmation	Observational study Controlled experiment design Controlled experiment results Response team call to action