Althouse linked to a story about a NFL player doing something (I didn't actually look to find out what) for a heart transplant recipient.
While I'm sure whatever it was was nice enough, I wonder how many celebrities get letters, fan mail, etc. and expect some sort of reply. If they respond to everything, then they'll have time for little else. And if they don't respond to heart transplant patients, then they're jerks.
Seems to be a no-win situation for the celebrities.