Editorials are the opinion of someone who's seen as an expert in the field--(either you a guest contributor).
This makes good content because people like to respond to it, either by agreeing with or opposing the writer. This can make for an exciting page, and you'll probably have to moderate it.
     Give your people a way to make their views known, put up a bulletin board or guest book on your site.people will come back to read other responses to their comments. And you can use this feedback from your audience by incorporating it into a follow up article in the future.
     For instance, is everybody complaining about a new government travel policy? Do an article on it, since clearly that's something people are talking about so they'll want to read about it.