Just to start with my favourite reply to posts like these...
When making a post about grammar, spelling and general readability, it's often advisable to proof-read ones own post
(Though yours hardly had any faults in it)
But think about it. This is an international forum, with members from all over the world, and of all ages. Thus you can not expect everyone to be able to write a 100% grammatically correct post, since they may not be old enough to know the proper syntax/rules, might not have the needed education (due to school system in their mothercountry which has another language than english as their mother-tounge) or migth just not be very good to explain themselves in a written langauge.
I do however agree that if you want help you'll have to write a post which either is understandable, or willing to help us understand what you're trying to tell us by trying to re-word you post when asked (no matter how many times) until we get it.
Then you have the problem with general layout.
Some... like... to... use... a... lot... of... dots... in... their... posts... Some prefer to use 3 dots when either wanting the people reading the post to think about what is beeing/has been said... And some are very strict about only using one dot at the end of a line. And starting the next with a capital letter.
Here I would say that the two latter ways of using dots are the best, as the first might make the post undue hard to read, and thus reducing the chances of gettnig an answer.
When it comes to CAPITAL LETTERS, that's also bound up to what rules the mother-tongue, for that member, has.
So as long as they realize that THERE IS NO NEED TO USE CAPS LOCK AT ANY TIME WHEN WRITING A POST, just let it go.
My point is that you'll have to allow each member to have their own writing style since we're not all native english speaking here, and have no interest in limiting our member mass to just those who can write correct english.
And last, one little curio for you to ponder about.
When you compare the english of those who have it as their native language with those who have it as their second or third language, it is often the latter that has the best written english of the two groups.
A bit long post, but I too has certain viewpoints on the matter.
[EDIT]
Oh, and btw: I can also make a long post about the use of indentation, quoting & the likes, but I'm saving that for if this thread takes of or not

[/EDIT]