Nothing ruins your argument and credibility more than a poorly phrased post. If your post looks like a 2nd grader wrote it, it doesn't matter how good your argument is. I'm far, FAR less likely to take you seriously. So, because I'm a grammar freak and twitch and die a little every time somebody confuses your and you're, a basic grammar (and posting) lesson for all the denizens of GT:
1. your and you're
your = possessive. I have your book.
you're = you are.
Correct: You're a nice person.
WRONG: Your not listening.
2. there, their, and they're
there = location. My book is over there
their = possessive. I have their book
they're = they are. They're right here = They are right here.
Correct: They're over there.
WRONG: There over there.
(GCC's contributions start here)
3. To, too, and two.
To' is a word that goes in front of an indirect object, that is, a noun that receives the action of the verb. In the sentence "I gave a monkey to Tommy," the monkey is the thing you gave, but Tommy was the recipient of the monkey. Thus, to Tommy. 'To' can also be used on the front of a verb in order to make that verb into a concept or idea, and thus a thing or noun. Thus, in 'I want to give,' 'want' is the verb, and 'to give' is the thing you want to give. It is the direct object of the verb.
'Too' just means 'also.' "I want to give a monkey to Sally, too," means that you want to give a monkey to Sally as well as Tommy.
And two is the number 2. "I want to give two monkeys to Tommy and to Sally, too.
(GCC's contributions end here)
4. Punctuation. Seriously, a period goes a long way. A sentence should have a subject, verb, and a few phrases or clauses separated by commas. A general rule of thumb: unless you have really mastered the art of punctuation, a sentence should not be more than two lines. If I go five lines without seeing a period, something is seriously wrong.
5. Spell Checker. Now, because I'm nice, I'm not demanding that everyone learn how to spell. I'm just asking you to use a spell checker. Remember: every time a word is spelled incorrectly, GCC kills a kitten, because he's mean like that. (Current pet peeve: it's "literal," not "litteral.")
6. Colors. Just...don't. The only color I should see in your posts is black. If there is any red, purple, green, yellow (let's not even mention pink), I will pretend your post never existed. And go easy on the bold, italics, and underlining. If there is more of those in your post than plain text, I won't read it either. Go easy on my poor eyes.
Its certainly not beyond God to do that very thing. 
