As others have mentioned the support is non-existent and documentation is also slim. That is a bad combination.
This is actually the first negative review I have ever taken the time to give after installing literally hundreds of paid on free Joomla components over the years and I hope the developer starts deciding to back up their product.
I installed it and had it running out of the box in a few minutes and the developer also took the time for a live chat with me.
Go for at least buying the copyright free version to help the developer as I know he is planning on updating to 1.6 as well as supporting only having one vote per answer, etc.
Stephen has helped me with several issues and gone out of his way to make sure they have worked properly on my site.
Hopefully enough of us can donate to make this worth his time.
Thanks for the module!