haha. here are some that i use:
hs= high school, bbl=be back later, ily=i love you, b/w=between, tmi=too much information, m8=mate, gr8=great, mkay=mm..okay, 411= information, myob=mind your own business, 459=i love you, nm=nothing much, nvm=nevermind, nmu=not much.you?, btw=by the way, atm=at the moment, jw=just wondering, jk=just kidding, admin=administrator, bbn=bye bye now, BA= bad a**, prolly=probably, pls or plz=please, bf=boyfriend, gf=girlfriend, bff=best friend forever, ppl=people, qt=cutie, sry=sorry, cmon=come on, msg=message, ttfn=ta ta for now, b-day=birthday
Here's some sites i googled up that has plenty of abbreviations. hope i helped you.
http://www.abbreviations.com/
http://www.webopedia.com/quick_ref/textmessageabbreviations.asp
http://www.netlingo.com/acronyms.php
http://www.sharpened.net/glossary/acronyms.php
