Didn't see this posted anywhere, so thought I'd share:
Found an interesting note in the LA Times yesterday, but could only find this link on the Baggage Direct Web Site.
http://www.baggagedirect.com/servicearea_singapore.html
I was only aware or them serving Hawaiian Airlines, they now service ATA, CO, and Aloha as well. I've never used the service, but I can imagine the time it could save to have somebody transport luggage and save some time.