I would only point out that like greg.harter I have not been a participant very long (based solely on points) and I would be very hesitant personally to make such broad characterizations as to the overall quality of SSC. I, too, appreciate the information provided here.
I'm not paying a subscription, so I don't get too upset about some occasional glitches in standard formal English. Many people from many cultures make valuable posts, perhaps in something other than their native tongue. I would be humiliated to have to post in French, although I studied it. It would take days to sort through all the grammatical and other errors.
The point being, to get the level of participation required to provide fresh topics daily, no mean feat, SSC may not be able to accept only those entries meeting the full requirements of King's English.
Likewise, no replies, including my own, meet this standard. The use of abbreviations, shortcuts, etc., seems to be allowed to respondents but not to those who submit articles. Perhaps a double-standard.
All of this is not even accounting for the difference between the UK form and USA form of English. I'm sure my colleagues in Great Britain could take exception with many of my standard forms of expression.
I'm not perfect nor do I expect perfection. Too many trees, I fear, have obscured the forest. Your point is well-taken that we should strive to express ourselves carefully and correctly when posting to our colleagues. Let's just not be too full of ourselves, shall we.