"Waiting for" makes sense, because then you can understand where it has something to do with me.
If it is John's job to get advertising, and me to spend it, I don't think about it too much, until I know there is money to spend
but this kind of touches upon the defer discussion (
http://forums.omnigroup.com/showthread.php?t=29834)
Sounds like either defer or delegate is not about me know -- but ultimately it might be