I've been using this plugin for a couple of days now--very useful!!
I am having a problem with the "Tags to add/remove when adding to a list:" feature. I have the tag to add/remove set to TBR and it works fine when the book I'm adding already has a tag(s), but when the book I'm adding has no tags then nothing gets added. This is calibre's standard tag column not a custom column and I'm running 0.8.3 on Vista.