A quick tip to make something out of the nothing that Will unfortunately experienced ... and he's not alone by any stretch of the imagination.
If you notice that you're not getting any action out of those you were counting on, contact them individually ... one by one ... ask them if there's a problem, and if there's anything you can do to help them with the promotion. Sometimes that little personal wake up call will do the trick. If it's gone beyond launch day and you've still not seen any results, another nudge ... then ask them if they'd prefer you set up an individual promotion to their lists at a later date (rolling launch). This also works if you've been pushed aside in favor of a major player's promotion ... even though you had an agreement. Tell them you understand, and that you're willing to set something up with them at a later date.
The amount of money you make during a JV fueled promotion can be controlled to a great extent if you apply some of the things I've mentioned, and you're willing to do a little extra work ... you can't just press the upload button on launch day, sit back and watch the money roll in ... you have to cover all the bases.
Would I love to smack the taste out of the mouths of some of the A listers and B listers I know that turn coat and jump aboard the next big thing ... and leave you hanging, without even the decency of offering to promote you at a later date?
... YOU BETCHA!
But it doesn't work that way, unfortunately ... the list owners have the upper hand in this situation, and you have to make the best of it.
Will Barden 
