I do use KosmicQuitter so I felt justified in adding the following entry to http://osx.iusethis.com
"What can I say. I wrote and I use it.
These sorts of apps probably only work for certain sorts of people. I use it to record my alcohol consumption and find that updating it every day helps me think about how much I am drinking.
It hasn't stopped me drinking, nor will it, but it does mean that there are more days when I go without a drink.