Although I admit to using some acronyms while I IM some people, I find it using it on message boards thoroughly unproffesional and inconsiderate to those who may not know English as a first language. I would also suggest, as many others have, to give it your best effort when you post- it keeps it easier to read (ironically!), and gets your point across better. I found this short satire on 'English Made Easy' while surfing the 'net. Enjoy!
English Made Easy!
Peace