Every word in a title should be capitalized. It’s an acceptable form of capitalization and it’s super easy to remember. I don’t understand why most people don’t do it that way. Otherwise you have to memorize all these exceptions for which words can and can’t be capitalized. Who can remember all of that? What about “in,” “to,” or “on?” It’s just not obvious. It’s like putting a comma after the second-to-last item in a list.
Honestly, I think I enjoy the titles of The Onion articles more than the actual articles. For example: Actress’ Abortion Written Into TV Show High School Student Council Passes Nonbinding Resolution Kindergartner Being Groomed For Line-Leader Position Unreleased Jimmy Page Guitar Riff To Be Retrieved From Secret Vault To Save Rock And Roll Anchor Ad-Libs News With 97 Percent Accuracy