I'm already not the biggest fan of the self-serve frozen yogurt fad. It was unique a little more than a year ago when I first stumbled upon it, but now it's growing tired on me.
The variety at this Mojo is awful. There's only a handful of choices, and only three or four of them seem to rotate. None of them were particularly good on my last visit. The yogurt itself is also very soft (a common problem at these self-serve places).
I will give the place credit for being very clean. The topping bar is well stocked with most of the standards. Mojo has a perfect location at Tempe Market Place. If you happen to be there and need a treat, stop in. If you need to drive out of your way, there's an infinite number of places with this concept that I would recommend heading to instead.