[jongaltsr]

IIOKWTFYWTA
If you use abbreviations then you should understand that most people do not understand what you mean. Some are easier to understand than others but you still eliminate a portion of the people you want to communicate with when you use abbreviations. So if you CKYPIYP you are not going to WYAD.

[westmichman]

I have seen ROFLMAO or ROTFLMAO used many times on this website and assumed that most people understood that it means-'rolling on the floor laughing my a** off.'