Love it!
This works great for me!  My desk actually has beams that run along the sides that I can hang this from.  When I first got it I tried hanging it on the desktop, but that didn't feel very secure to me.  It still can move around on the beam, but it hooks a little better making me confidant it won't fall off.  It did take a minute for me to figure out what length I wanted it to hang, and it would slip when I would put my feet on it.  But once I found my perfect length I did a light knot above the toggle and it has stayed in place.  So, basically, I love it!
Rating: 4 stars