Thanks for the replies.

I have a few more questions about diacritics.

Aside from façade, how many words in English require a cedilla?
How many words in English require a tilde, Señor?
What dø yøu call the 'ø' with a diagønal line thrøugh it? When dø yøu use it?
What is the ætiology of the ligature?

Do you think these things are disappearing from English?