When I wrote my thesis for my degree, I checked and double-checked every word, phrase, sentence, comma etc. Likewise with a novel I recently finished writing. If it ever gets published I doubt it will be in the same format as is it now, but at least I know that it's written with acceptable grammar.

There are times when what can only be described as 'poor English' is totally unacceptable, and other times (such as forums like this), when the rules should be allowed to be relaxed. After all, on discussion forums like this, what is more important, content or commas?