Thanks Frank, but I still do not understand your answer here.
In your FAQ you say "to paste the block of "about the fold CSS" in the input field". But what does that mean? Where does one copy "the block", where does it come from? What does this block look like?
I understand your thoughts about Google Insight and will consider them, but nevertheless I want to do the best I can especially as it sounds very easy in your FAQ. But I just do not understand about which "block" you are talking about.
When you say it is easy "
As from Autoptimize 1.9.0 this is easy; select "inline and defer CSS", paste the block of "above the fold CSS" in the input field (text area) and you're good to go!" and it isn't or it is a danger to the website than maybe it would be a good idea to change your FAQ accordingly ;).
I am sure others have the same problem ...