I'm not sure I agree with it in student essays and things, and I hate it when people 'speak' in it, as a spoken language it's just stupid, and has been ever since people in the forties and fifties used to say goodbye to each other by saying TTFN.
But where it is meant to be, in text messages and on the internet I think it's just a bit of fun.
I can't agree with what some people say about it just being laziness as I often find it harder working out which abbreviations I should put than I would find it just to spell out the long words! But of course that might just be me.
I understood Bounty's post but it was very hard to read and took ages. But of course THAT could just be me too!
Logger what does PMPL mean? I've not heard that one I don't think.