From what was described to me, when you vote you ask for a sheet of paper. You can ask for several but you'll get weird looks from people. The end result is that anyone that votes in fringe options is effectively identified because no one else asks for those options.
The person that told me this was competely oblivious to any problem with it. When I mentioned that this makes voting "de facto" not secret he mentioned that next time he would ask for all options.
I just don't get it.