Agave Nectar: Good or Bad?

I’ve seen several posts on tastespotting.com and foodgawker.com with recipes substituting sugar or honey with agave nectar.  I haven’t fully converted because I’m not sure if the taste and consistency would be the same and I haven’t really researched into the benefits of it myself.  (This website claims agave nectar is good for the glycemic index.)  I just assumed it was supposed to be a healthier alternative, but I just ran into an article on the Kitchn (and no, i did NOT spell that incorrectly) that made me re-think using agave nectar.  Maybe I’ll stick with honey for now.