Rated 2 out of 5 stars
It seems to be designed for situations where you have to fill out the same form over and over. Most forms I have to fill out are always slightly different so it just won't be useful.
I found the support site and it seems that you have to use Right click > "Add rules for this form". So I think it's designed for repetitive form-filling of the same form.
I found it a bit difficult to use. You go through the wizard and nothing seems to happen. Better usability needed.