As it turns out, Daniel White (Cleveland Gun Rights Examiner) had already found a widget that works pretty well. It's over on the left. It's not perfect, exactly--the free version has ads, and the pay version is a yearly subscription. It does, however, give a rundown of all the headlines from all the Gun Rights Examiners in the same field, so it's a little easier to use. It doesn't say which Examiner each headline comes from, but at least the newest are on top, and it's easy to install.