Lisa has established a new rule, in the interests of clarity, etc.
It covers slang, abbreviations, text-speak, etc:
5) STRIVE TO SPEAK CLEARLY.
We have members from around the world on our forums.
Many do not speak English well.
Please be tolerant of non-English speakers.
Also, please try to write as clearly as you can, without relying on "text speak" or abbreviations.
This will help make sure all of our forum members can understand you.
We understand that, in your private world, you may have great fun using LOL and LMAO and WTG.
This is fun for your friends, but greatly confusing to someone from China or Russia.
We understand it might be a challenge to train yourself not to type "u" instead of "you" or "enuf" instead of "enough".
Please make that effort so that the forums can answer the questions of our millions of visitors who do not speak English as their first language.