Farming nuzzles will be abuse of the function.
This karma function is here on the site to actually "like" someone for contributing to the community with well written posts, helping subjects, or "smite" a user if they do something wrong.
Making threads giving out these so called nuzzles just from simply filling our boards with threads/post that doesn't really serve a good purpose is almost as bad as repeatedly biting someone just because you don't like the person or agree with them.
It's threads like these that makes me re-consider if having a karma system is the best choice. It's sposed to be a fun little function users can use on each other, but this is not how the karma was meant to be used. Hope that's understandable.