So FireflyNightLight called my attention to this kid who needs a bone marrow transplant.
The site above lets you know more about his story and also gives you several useful links to registering. So register!
Also if you are Asian or partially Asian, this website
will also help you register, since this issue is of particular concern for Asian Americans. Something you're probably aware of if you read Angry Asian Man as obsessively as I do. In case you don't that's why I posted it here.
You can also read more about the guy here
And even if you're not Asian, register anyway. I found out I was 10% Native American, your ancestry may surprise you and therefore save a life!