Standard abbreviations are ok, for example I would have no issue with 'iirc', 'iyswim', 'imo' etc ('If I recall correctly', 'if you see what I mean' and 'in my opinion'). These are used by people across the internet and are a form of shorthand.
What really boils my
is lazy chav speak, eg 'wot' instead of 'what', 'gr8' instead of 'great'. It doesn't actually
save any time to chav-speak. Furthermore, someone seeing me use 'iirc' will see it in the greater context of the post, and will realise that I am not a semi-literate window-licker.
Perhaps there is hope for this place yet. Next step; the re-introduction of banter.