Capsaicin Effect on Metabolism

Curious as to the effect if any on Capsaicin on the metabolism?  It seems to be written in all of the trendy fitness material as a magic fat burner (which probably means it has no effect at all).  As a lover of spicy food,  I'm interested as to any other effects on the body....like if my innards are cursing at me.  

Thanks

It increases localized surface blood flow. I wouldn't give it much credit for "fat burning" if any.