In reference to R' Micha Berger's post that:
> BTW, the MB reads "shelo asani aku"m
I had written:
> Can anyone else think of a similar example? I have vague
> recollections of abbreviations in tefilos, but a *bracha*
> is another matter entirely.

Here are some examples for comparison:

-- In the Mi Sheberach for Iyar and Cheshvan, I've heard both "Bahab" 
and "Sheni Chamishi v'Sheni".

-- In the Mi Sheberach for the Israeli Army, I've heard both "Tzahal" 
and "Tz'va Hagana L'Yisrael".

-- Towards the end of the Kesuba, I've heard it read both as "Chazal" 
and "Chachameinu Zichronam Livracha". It is written as "Chazal" both 
in my wife's kesuba and my daughter-in-law's, but perhaps others have 
it spelled out.

(If anyone can find an example of an abbreviation which appears in a 
zemer or piyut, where the number of syllables is significant, that 
would be machria towards that pronunciation.)

On the other hand, there are tefilos which include gematria-style 
numbers, and I suspect that everyone reads them as written, and not 
as numbers:

-- In the Mi Sheberach for male cholim, it is "Ramach Evarav v'Shisah 
Gidav", not (the Hebrew of) "Two Hundred and etc etc". (Sorry, my 
dikduk is fading, and didn't want to risk getting the forms wrong.)

-- Many people say a certain tefila prior to certain mitzvos. Many of 
them reference the above 248 and 365, and also mention the "Taryag 
Mitzvos", leaving the 613 as a single abbreviated word.

Akiva Miller