The 'yes for the worse' was a mistake and meant to be a 'yes for the better'.

I presume one of the 'no's was Mattimus, who says it didn't change his/her life but he did change his life himself after the experience... which some people might count as a yes!

I have no idea who the other no was.

The important thing is that there aren't any deliberate 'yes for the worse' votes yet.