PPD is PPD regardless of sales or not.
That is why you have different tiers of traffic, with the lower tiers offers lower pay because their quality of traffic is worse.
If PPD depends on quality traffic and sales, then don't offer PPD and just offer PPS then.
Also, in the beginning they promised lots of things, but then changed their minds and decided to use the new rates for traffic that happened while the old rates was supposed to be in effect.
Under normal circumstances, this would be kinda breach of contract...
Also, even though it may be shit traffic with no sales, at least they got shitload of exposure from it and everybody and their brother in law got to know them. So it wasn't entirely to waste.
I think this may have been a calculated plan.
Why do you believe those that do better then you should have to pay your way?
This is exactly how PPD is supposed to work. Even though I may have poor traffic, there will always be somebody who got premium elsewhere downloading my content. This is why you get a tiny bit of revenue by offering content which may be of interest to other premium users.
---------- Post added at 02:25 PM ---------- Previous post was at 02:02 PM ----------
And while bitshare got banned from here because they like to unreasonable ban their users for such reasons as "payment spam" here, but for umb, it's perfectly alright to ban for similar reasons.
One is almost not allowed to criticize umb even...