@TickTockMan,
It is the community that for all intents and purposes establishes its own "manual of style" that best fits it purpose. While the nature of internet forums seems to tolerate a certain level of spelling and grammar mistakes, it seems that in a forum more or less dedicated to philosophical and intellectual discussions, these standards would be higher than in many other internet forums where chit-chat, babble about sexual adventures and personal feelings attendant upon them, and shouting of opinions seems hold sway. I suppose there is a need for them, since there are so many of them; but I am convinced, especially in today's world, there is a absolute need for forums such as this, where intellectual issues are considered important enough to be discussed philosophically.
Many good browsers (e.g. Firefox) have spell-checkers that provide help in posting here, and one can if desired, compose a post in a world-processor and then paste it into a message box. Mistakes in grammar, if the result of carelessness, can be avoided by copy-reading one's own posts before the reply button is used, and in some cases by rereading the post and using the edit button. If one wants to write well as a courtesy to others as well as to more perfectly express one's thinking, then one must take the time and effort to teach oneself the language.