It worries and annoys me immensely how often these minor mistakes are made in these forums. Yes I'm aware they are minor but at the same time, God help us. Seriously people? Not that difficult to note these things.
I get really annoyed when I see something like "Your crazy" or "you're shoes." ¬_¬ Seriously? Here are the 3 main offenders

contraction of you are: You're certain that's right?
–pronoun
1.
(a form of the possessive case of you used as an attributive adjective): Your jacket is in that closet. I like your idea. Compare yours.
2.
one's (used to indicate that one belonging to oneself or to any person): The consulate is your best source of information. As you go down the hill, the library is on your left.
You're contraction of you are: You're certain that's right?
–conjunction
1.
(used, as after comparative adjectives and adverbs, to introduce the second member of an unequal comparison): She's taller than I am.
2.
(used after some adverbs and adjectives expressing choice or diversity, such as other, otherwise, else, anywhere, or different, to introduce an alternative or denote a difference in kind, place, style, identity, etc.): I had no choice other than that. You won't find such freedom anywhere else than in this country.
–adverb
1.
at that time: Prices were lower then.
2.
immediately or soon afterward: The rain stopped and then started again.
3.
next in order of time: We ate, then we started home.
4.
at the same time: At first the water seemed blue, then gray.
5.
next in order of place: Standing beside Charlie is my uncle, then my cousin, then my brother.
6.
in addition; besides; also: I love my job, and then it pays so well.
7.
in that case; as a consequence; in those circumstances: If you're sick, then you should stay in bed.
8.
since that is so; as it appears; therefore: You have, then, found the mistake? You are leaving tonight then.
–adjective
1.
free or released from fastening or attachment: a loose end.
2.
free from anything that binds or restrains; unfettered: loose cats prowling around in alleyways at night.
3.
uncombined, as a chemical element.
4.
not bound together: to wear one's hair loose.
5.
not put up in a package or other container: loose mushrooms.
6.
available for disposal; unused; unappropriated: loose funds.
7.
lacking in reticence or power of restraint: a loose tongue.
8.
lax, as the bowels.
–verb (used with object)
1.
to come to be without (something in one's possession or care), through accident, theft, etc., so that there is little or no prospect of recovery: I'm sure I've merely misplaced my hat, not lost it.
2.
to fail inadvertently to retain (something) in such a way that it cannot be immediately recovered: I just lost a dime under this sofa.
3.
to suffer the deprivation of: to lose one's job; to lose one's life.
4.
to be bereaved of by death: to lose a sister.
5.
to fail to keep, preserve, or maintain: to lose one's balance; to lose one's figure.
6.
(of a clock or watch) to run slower by: The watch loses three minutes a day.
7.
to give up; forfeit the possession of: to lose a fortune at the gaming table.
8.
to get rid of: to lose one's fear of the dark; to lose weight.
9.
to bring to destruction or ruin (usually used passively): Ship and crew were lost.
10.
to condemn to hell; damn.
11.
to have slip from sight, hearing, attention, etc.: to lose him in the crowd.
Dictionary meanings were taken from Dictionary.com
There's probably a spelling mistake here somewhere and rather than focus on my point, I'll be accused of failing but my point still stands ¬_¬