bouncing vs static stretch?

I have been using both a bouncing and static stretch. Now I have heard for a long time that a bouncing stretch is bad and you should not bounce during a stretch. But I have seen others do it and I also bounce sometimes depending on how it feels and it feels fine lately.



I used to never do bounce stretch because I heard it was bad , but I 'm feeling ok with it, it feels like a compliment to my static stretch.



So the question is ; is bouncing stretch bad???