The one phrase paragraph
I'm trying to work out why, and I think it is because it is too easy. I believe a journalist's job is to make an impact with how things are described not the way the words are physically arranged on the page. If a phrase has a paragraph to itself it immediately stands out. It is a gimmick, and like all gimmicks it is interesting at first but becomes irritating with overuse. The one phrase paragraph is pretentious.
So stop it.
(And that is a message to myself too)