I don't worry about it. Test-speak is forbidden on the forums, and I feel that rule ought to be extended to chat, as well. PF has a lot of guests from non-English speaking countries, and many of them preface their posts with "I am sorry for my poor English". Why put an extra hurdle in their way if we would like them to participate in chat? Obviously, I am not referring to somebody like Borek, whose grasp of English is excellent, but it would be nice for all of PF to be inclusive.
Just my thoughts. No biggie. Text-speak is merely annoying to me, but might throw some foreign students for a loop.