Good point Gordon. If someone is asking about firefox plugins then they should be looking at firefox-plugins, or confluence-plugins. The drawback there is that you can't then group all answers to the generic 'plugins'. Instead of a search of [plugins] it would be a search for [*-plugins ] which for some reason resolves to [vim-plugins] when searching from the search box in superuser.com. As an interim step using both could be tried, so an article would have [firefox] [plugins] [firefox-plugins] and statistics could be drawn to see which approach is better?