有什麼外國年輕人網上常用縮寫?

LOL: Laugh Out Loud (笑死)
Opps: 係唔係 Oops? 唔係縮寫 (哎呀)
FFSA: [I know FFS, not FFSA] For Fu*k Sake (當比面上帝)
OMFG: Oh My Fu*king God (我的天呀)

Others:
2: to (去)
2nit: Tonight
4: For
4ever: Forever
abt: About
b2w: Back to Work
bb: Bye Bye
btw: By The Way (順便講下, 仲有呀)
cu: See You
f2f: Face to Face
gr8: [G-eight] Great
lmao: Laughing My A*s Off (笑死)
m8: Mate [M-eight] (朋友)
ne1: [N-E-one] Anyone
nvmd: Nevermind (唔緊要)
peeps: People
pls: Please
rly: Really
wkn: Weekend
wtf: What The Fu*k


Most useful:
http://www.urbandictionary.com/

Others:
http://www.webopedia.com/quick_ref/textmessageabbreviations.asp#f

http://www.webwasp.co.uk/define/SMS-text/a/index.php

http://www.netlingo.com/acronyms.php

sk8 = skate
w8 = wait
ttyl = talk to you later
afk = away from keyboard
brb = be right back
lmfao = laughing my fu*kin ass off
lol = lawl = lolz = lul = lulz
rofl = rooling on the floor laugh
ily = i love you
people = ppl
leave = lv
ya = you
asap = as soon as possible
2nite = tonight
wtf = what the fu*k
wth= what the hell
stfu = shut the fu*k up
np = no problem
ks = okayss
dork = adorable
kl = cool