[quote=@Vilageidiotx]
<Snipped quote by The Nexerus>

No you didn't.[/quote]

Yes, I did.

[quote=@The Nexerus]Punctuation, and grammar in general, is the difference between knowing your shit and knowing you're shit.[/quote]

With that example cited, I'm not about to get into a war of anecdotes. Removing the distinction between 'you're' and 'your' lessens communication in at least one instance, and cannot possibly bolster communication in any instance. The distinction between the two is therefore practically valid.