To Philly and Lenka,
I couldn't agree more - these so-called computer/Web speak/slang is definitely not suitable for formal writing. However, many of us don't seem to have a clue about the proper writing etiquette when the occasion arises. I'm wondering whether they would accept such words used in school tests/exams. I've noticed that many people nowdays have below-par language skills, i.e. wrong words in context, misplaced/missing punctuation, misspellings, after graduation. In any case, I chalk all these up to the inexperienced and poor-quality teachers in our schools today--a growing problem indeed!