Promulgated means "published," or "formally and publicly declared." Newspaper opinion pieces contain promulgated ideas and viewpoints.
Promulgated comes from the Latin word promulgare, which means "to make publicly known." Promulgated laws are ones that are announced by some kind of formal proclamation. But these days you'll more often hear about promulgated ideas — it's a fancier way of saying they're promoted or shared with a lot of other people. So those thoughts you post to your blog? They're all promulgated opinions.