I've been actively using a few StackExchange sites for some months now, and it seems common for some users (especially the more experienced ones) to use abbreviations in their questions, answers and comments. These go from
AFAIK, which are known and used elsewhere, to others like
CW, which appear to be internal to the StackExchange network. Others appear to be internal to
SFF (this site).
While most abbreviations might seem natural to experienced users and native English speakers, I think there should be a list of common abbreviations for everybody to read. In my opinion, this should not be a question in meta, but a part of the FAQ.
In any case, this question in English Language & Usage meta seems to be a good read (at least the part of the StackExchange abbreviations), but it would be good to have a list here.
The reason for this post is that somebody replied to a comment of mine and used a name or abbreviation I've never seen before (
WOMBAT), so I couldn't really judge whether his reply was well-founded. I already knew what
FYI means, but, as I said before, this might not be natural for people with English as a second language, just as
OP is not natural for new users.
If your answer is "Just google it": Yes, I could waste a few minutes using a search engine, but it'd be way better if there was a list of abbreviations as part of
SFF. Actually, it'd make it more self-contained, which can only be positive.
(...besides, a google search for "wombat" just shows a bunch of Australian marsupials)