Mine is OOO for Out Of Office. I always misread it in my head like a ghost and it takes me a few seconds to process. It also doesn’t translate to speech—you have to say the whole thing.
Interested to see if others have similar acronyms they beef with.
Saving a few decieconds is the most upside they can possibly have.
Potential downsides: the reader has no comprehension, has to spend several full seconds or minutes asking the meaning, has to spend extra time mentally processing the text cos it’s coded.
TLAs are stupid.