Here is a list of more online/text acronyms than you will ever want to know!
The Largest List of Text Message Shorthand (IM, SMS) and Internet Acronyms Found of the Web - kept current and up-to-date by NetLingo The Internet Dictionary: Online Dictionary of Computer and Internet Terms, Acronyms, Text Messaging, Smileys ;-)
No way could I ever remember all of those. But it is fun to look through them. Teens and Twenty-somethings usually have these in their head like some second nature language. My son can text faster than he can talk. Amazes me how he knows all of that stuff! Now if I could get him to remember to take out the garbage!