I take the attitude that anyone who uses codes, acronyms, etc. in a post, intends that only those who understand the codes will understand and respond to the post. Personally, I want as many readers as possible to read and make use of my posts, especially beginners. So I never use airport or airline or alliance codes or abbreviations or acronyms. And those who use airport codes in an question miss the possibility that I could answer that question. I don't remembers the codes of even the (considerable number of) airports to which I have flown.