Disclaimer: I used the search function before creating this thread.  I was however tired, apologies if a thread or post addresses this issue already.
As far as I know, rules do not exist for inciting positive emotions.  I would assume they generally should not cause damage persay, though I could see overloading ones sytem with pleasure... though I'm not certain it applies to "positive" emotions at that point. 
I suppose one could place manuevers with it. "Bolstered Courage" etc.  How else might such a power work system wise?  
I'm certain a use of this power would not invoke True emotions (True Courage, Love, Hope, etc.)
@ Sanctaphrax: Your entry on angels (archangels perhaps?) has them Inciting: Joy.  How did you envision this effecting play?
I ask because I hope to simulate an effect similar to Cavaliers from 2nd Edition D&D. (radiate courage 10ft as per the Emotion spell...I know there is no way in this system to constantly radiate a power.  I simply wondered how to reproduce a similar effect) Where said character could bolster his allies courage. 
I assume the power would look something like: Incite Emotion (courage) - 1, in bursts?(zone) -1 
Seeking advice and opinions.