Originally Posted by VydorScope
How common is this? I have not heard, nor seen it anywhere in common use. Would your readers even know what it was?
Ah, but I've never written for readers. I've always written for myself and a few close friends. I once won an award for a collection of stories I never expected anyone
But to answer your question, the diaeresis is fairly common. See this blog entry
and then read any article in the New Yorker