The think the thread may have gone a little off topic. (Not helped by the people who have added "who gives a ****?")
I believe that there is a time and a place for 100% perfect written English - however this still doesn't happen. CV's, reports within the workplace, published books, official website ie. Government sites etc, and newspapers. (This is just a small list)
I also believe there are so many other places that the grammar should not be scrutinized so much. OCUK forums is a prime example of this, along with text messages, letters to friends, emails to friends etc.
I can see the argument coming along on the back of this being "but why not do it all the time, if you can do it in the workplace etc etc". I truely believe that the English language is one of the most difficult to learn anyway, and not being 100% clear on where an apostrophe goes, or when to use bought and brought doesn't mean that the person is lesser than somebody who knows the rules. As pointed our previoiusly language's evolve, maybe these rules should/could too? New words get added to the Oxford dictionary on a regular basis.
In the interest of this thread and relating to OcUK forums the whole grammar issue should be relaxed by the members.