Maybe people use "txt-tlk" because they are too lazy to type out everything else. It could be a "quick response" format? Well, I do sometimes, that is, use "brb" or "g2g" every now and then. >___<;;
However, no doubt, acronyms ARE annoying.
to Seabutcher: Alternating cases are very annoying. That probably came from people trying to be somewhat "cool"?
