Personaly, I'm tired of mac users trying to tell me how great their computers are. I already know what they're all about. I used to be diehard mac, now it's flipped 180.
I've had bad experiences with macs that I don't even want to get into here.
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it can infact go both ways, personal experiences isnt really "proof" how bad or good a plat form is... everyone will have preferences, the best thing to do is to not let him get to you, instead of jumping all over it and having a heart attack, because some one is misinformed, try humoring him at least, it causes less stress....
and in all honesty in my experience, the mac os and the windows os are too similar to have bitch fests over all the time... and please dont start with the "windows copied everything mac" ... anyone with a level head can tell you its gone both ways, its called evolution of technology, we would still be stuck with Xerox's original GUI if no one improved on others ideas or incorperated them.
and as far as im concerned this pc user didnt do anything wrong, he gave us a link to something new, and he happens to like the ideas that stem from it... its not like he came in here and called people names or "trolled"