Capitals don't stress words. They just make you look stupid.
And yes, he said 'Your' instead of 'You're', and had some bad grammar, but weighing up who's argument is more valid I'd say he wins.
The fact is, one of those three things is right, and you're moving the conversation away from the fact that you're a douche by commenting on someone's lacking ability to care.
So, why not post something that replies to what one of us has said, rather than conjuring more hatred?