With Samsung and Orange launching the UK's first Welsh language predictive text messaging phone on 1 September, Rightmobilephone.co.uk has created "a handy English-Welsh txtspk guide" covering 10 popular abbreviations.
It seems you can use OFN (O fy nuw) instead of OMG (Oh My God), and CYU (Chwerthin yn uchel) instead of LOL (Laugh Out Loud).
If you want to LMAO, that's CFHYN (Chwerthin fy hun yn wirion), apparently.
What they do with numbers (L8R, F2F, B4) is anyone's guess.
Presumably other languages have their own abbreviations, just as the French have MDR (mort de rire) for LMAO. In fact, French novelist Phil Marso wrote a whole book in txtspk: Pa SAge A TaBa : Vo SMS
Does anyone know of a multilingual txtspk dictionary? Or fancy starting one?