Thanks for your interest in the Thank mod Gofer01.
Actually, I have implemented the thanks mod first on Yaf 1.9.3 RC2. You can find out more Here
And here is the implementation on yaf 1.9.3 Final. You can download it form Here
Anyway, The latest svn build has several bug fixes and is improved in performance very effectively so I recommend you to upgrade to 1.9.4 when a stable release has been published.
If at first you don’t succeed, call it version 1.0