Wow..this is been a very interesting thread..would love more info on the scientific facts of cakes and bacteria.
I am a firm believer that everybody does things their own way.
I do already the same things cake divine does to the exception I use saran wrap from sam's
I believe bacteria lives everywhere around us, and you deal with it even sleeping.
This system do work.
I had a student I gave a recipe for making buttercream. She came to me and her recipe was all runny. I couldn't understand why, she said she follow the recipe. I never had trouble with it.
So I decided to do the recipe with her and it work wonderfully.
The steps she took were different than mine.
Sometimes little things we do do different, from person to person, will change the outcome on something we are working on.
Basically what I am saying.. if it didnt work for someone in here, maybe something you did different change the outcome.
Even grease in the walls of your oven will change the outcome.
This is just food for thought..enjoy the tips cakedivine gave you. If you feel uncomfortable, find what best works for you. At the end that's what matters.