Yes, a frother emulsifies it. If the oil doesn't bother you it's no big deal. One of my DD gave me a frother. I'll have to try the cocoa powder again. I usually use Splenda though.
I agree the light soy milk is better and I always bought Silk vanilla. I only started getting the coconut milk when I decided to add it to my diet. For drinking plain I prefer the vanilla soy milk though.
Forgot to mention...I started sleeping better as well and wasn't sure if it was CO related or just weird coincidence. Interesting!