Everyone I know that did arbitrage is on Hold. Yes, the problem is arbitrage. Despite RD saying they allowed it, clearly Google has a problem with it. I've been biting my tongue for 18 days now, but I'm done.
RD currently owes me $35,000. No, that is not a typo. That is my earnings for May 1-10. On May 10 all my sites were shut down (even ones I had never driven PPC to), and RD claimed Google told them that they considered my traffic invalid. ALL my traffic was through Google (SN and CN). All my traffic had been fully vetted by RD. I have the emails from their support clearly stating that they considered my traffic good. They have paid me almost that much for past pay periods, so this was not the first time I had driven that volume of traffic. To date they have been able to give me absolutely no indication that I will ever be paid. And I am far from the only one owed sizeable chunks of money.
This will not end well. I have been very patient with RD, but I can't afford to be patient anymore. I am taking the actions that I consider appropriate to recover my money. I suggest the rest of you do the same. And for anyone crying bullsh*t, I am happy to provide full documentation including traffic stats from Google, my RD graphs, etc;