One thing that irks me about The New Yorker is their liberal use of diacritics. They've added umlauts to words with consecutive vowels like "cooperate" (coöperate) and "reelect" (reëelect), when it hasn't been a part of conventional American English (or any regional variant?) for quite some time.

It comes across as pretentious, which may be what they're going for and what their target audience wants to feel when they read The New Yorker.