I'd rather learn that in the headline, thus knowing whether it's worth my while to read the whole story.
Fiction is designed to catch your attention at the beginning, and make you want to read to the end. News is designed so that you can stop reading at any point, or just read the headline, and have got the basic gist of what's going on.
The attention-grabbing, mysterious headline on a "news" site, however, is a lousy trick in the memetic marketplace, tunneling its way into the host's brain to advantage itself at the cost of the reader.