Hi, I have been plugging along with the YTZ-Zeropark approach and I have two quick questions for those who are more seasoned in this arena.
I have done some pruning (Traffic Type~ Domain only; Desktop only, Non-adult, Day parting) but it is tough to make the Payout exceed the Spend. What else can I do to lower the spend in order to make this in Green? (More narrow Day part? Lower the bid?)
Though the number of conversations are NOT crazy but the conversations are constant.
These are the reports of the last seven days.
(the pop-up one on top I already cut out a few days ago)

No lottery in this GEO so far ;-p
Thanks.
My second question is, once I get this in the Green, is Going to other Traffic Source(s) the only to scale this up? As most know already, Zeropark doesn't use up the daily budget most of the time...
Arbitrage through YTZ is not always going to work...
You can optimise every part of the campaign but in the end you have no control over what offer is popping up on the back end.
I'd find the offers that are doing the best and run a campaign that goes to that offer alone, i.e. cut out YTZ and see what happens.
@Zeno, meaning I should use proxy and view the offer link as if from that particular GEO and to find out what exactly are being displayed and offered?
Yes. If you have run enough traffic for them to optimise offers, then if you visit many times with a VPN (ideally several from different IPs in your target country), you should get an idea of what offer is working best.