Just because people don't respond doesn't mean they don't care. Also, if I remember right, you didn't have a lot of information on the thread, just that he was in the hospital and you didn't really know what was wrong. Second, you said he doesn't post often, so I doubt very many people even know who Chad is.
I realize you're upset, but just take a step back and see you're angry at people because they didn't respond to something that they really didn't know anything about.
Perhaps if you had taken the time to explain who Chad is and remind us of some of his latest posts you would have gotten more replies. As it is, coming out and saying "Chad is in the hospital" means absolutely nothing to most people. Why do you expect us to remember one person out of hundreds at the drop of a hat?
I'm not trying to attack you, though I realize I amy sound a bit harsh; I'm just trying to get across the point of the first sentance, "Just beacuse people don't respond, that doesn't mean they don't care." I am sure there are many people who care, they just don't have enough information to respond to.
That being said, i am sorry your friend is sick. If you have any more information, please share it with us. Otherwise, there's not much else I can say.