Originally Posted by gleff
Any cool stuff in the signup packages for any of these programs? The USAirways Corporate Awards program used to come with a couple of space available upgrade certs. The America West program used to come with one upgrade cert, too, a long time ago... Made it worth just signing up for the program to get the certs.

Not that I've seen so far. Starwood is the only one that's given anything - makes everyone you attach to it "Preferred Business" members (pseudo Gold) and gives you a signup bonus of 700 Business AAdvantage points if you signup through their link.
Continental seems to be the least restrictive airline program, mostly because it's a "set it and forget it" (like the Starwood.) As long as the employee's Continental number is in their system, you'll get points. As far as I'm concerned, that's "free" incentives because I don't keep having to track down ticket numbers in expense reports