I was thinking whether or not I should tip the shuttle driver, who didn't help at all with my suitcase and bag and just had me struggle to get it into the shuttle (there is also a trunk, which he didn't offer to open for me either). On the one hand, I feel bad he makes so little money. The company probably doesn't pay him much, with the rates it is charging for the shuttle. But should I compensate for the fact businesses are cutthroat and rates are so low? I feel I should, because I support paying all employees more.
In the end, however, given he pulled over without announcing my airline (I knew I was in the right terminal) and goes to the back to help the other customer retrieve his bag from the trunk, I just walked away.

Ah, back in America with American problems.

(regarding the old thread, a flyertalk search didn't reveal anything newer)