For print headlines, the Associated Press (AP), Wikinews and Wikipedia suggest “down” style for headlines which means that only the first word and proper nouns are capitalized.
As an alternative, the “up” style capitalizes every word except those with fewer than four letters and looks kind of weird to me. AP is fine with this for online headlines.
So we’re switching to “down” style for the time being. We reserve the right to change our mind.
Just deal with it, or comment below to give your point of view.