OO did I , well Im sure 1 mustnt take all the credit.
1st off a few lil comments on this.
The question, isnt it a bit biased? Also implies an opinon of mine ( which may or may not be accurate) and which certainly shouldnt be there to lead. I believe my suggestion stemmed from a possible solution to other peoples concerns ( and not on this forum, tho I may be wrong, I often am).
Wouldnt it have been better just to have had 'Text speak, what do you think?'? Followed by your two ( or is it four) questions. However, that still leaves out the third way of ' Are you really bothered? Can peeps do what they want?'.
I would say I couldnt give a definative answer. 'LOL' - text speak and I hate it. Ash ,you dont like Text speak but use this term. 'Brits' is now in the dictionary but its a word i hate. Gets difficult dont it

Why and where is txtspeak used. Well for a start not normally for very important things , where people want to get over a message. Its certainly not needed as we have a full keyboard (OK a few may use access via their 'phones from time to time). So might be an idea for people to say why they use txt speak or why they do not.