Some more updates:
Clover Leaf: please sign up for our Recipe Club and newsletter.
Go Veggie: mailing coupons, will update with what I receive. Did not answer how often you can request coupons; if anyone knows please post.
Neal Brothers: do not offer coupons at this time.
Ocean Spray: no coupons at this moment; please join Cranberry Club for future promotions.
And 2/3 out of Earth Balance, Glutino and Udi's are mailing me coupons; can't figure out which because the emails don't say and they're from the same person (same parent company).
I've also starting updating the main post on if you'll receive email confirmation of them sending out coupons, so that way we know what to expect.