Is "frozen yogurt" any good in its own right or is it just a gimmick to trick idiots into thinking they're eating something healthier than ice cream?
It's pretty good. I don't think anyone should be eating it thinking of it as "healthy". Maybe you save a few calories so you can eat a little more if you're on a really strict diet. Most frozen yogurt places are all about the toppings and mix ins though and that would probably negate any advantage there.