Code Archive
See my previous paste for the whole class (minus this) http://kuttler.eu/code/wordpress-plugintheme-options-page/ more
I use helper methods/functions in my themes and plugins to create the input fields, this was simplified for the example here. more
The function should probably check if the post already has the tag/category before adding it a second time. I should probably look into the wpispost_revision() part again as well. more