This plugin is a great idea but has some problems.
1. It does not notify people on facebook who have been tagged even though i have the option to do so selected.
2. The text reads. "Who is on this page? Already tagged:" so says the same thing twice which looks pretty silly. No option to adjust the text.
3. The only option to remove the text puts a dog ugly button in it's place.
Fix these problems and this plugin could be incredibly popular.