I have smoked incense before, I can't really remember what it was called. But it was a very good kind, Namchanca I think. I wouldn't say the effects I received were good, in fact they were very mild.
This could be due to two factors:
1) They method I used was dumb. I would burn a tiny hole in a plastic bottle and then just let the smoke coming off fill up.
2) I did not exactly know what I was smoking, I was ready for any kind of effect. This could have produced a "sense of being high".
Anyways the effects I felt were very mild. I would clear the bottle after it was milky white and exhale after a few seconds. I would get a "lighter" feeling and it helped me relax and space off.
That's pretty much all I felt but I can agree with
nickynack338 said -" there was a definite depth to the blackness"-
I know that the way I smoked it was dumb, and I don't ever plan on doing it again
but this was just my experience with incense and its potential effects.
The Unknown = A Place to Learn