hi to everyone, i have a successful pop traffic campaign, i spending 40$ and making 60$, is already optimize, but now i what to understand how i can scale the campaign.
i was thinking about upping the budget about 20% every other day.
i asking this question because 2 week ago i had a campaign with 200$ daily budget that make 80% ROI, but after i double the budget (400$) the campaign pass from 80% to negative ROI overnight.
thank you
Way smarter/better people will chime in here, but: you can scale vertically (on same traffic source, like ZP) as you tried: raise the budget and/or open up more sources and targets slowly and optimize as you go. This should technically be easier as you already have good placements for your geo/lander/offer. But you'll run into diminishing returns, as you said.
Another option, if it's an awesome offer+lander+geo already then scaling horizontally (to other sources) is also relatively painless to do. Start setting up accounts on clickadu, adsterra, hilltopads, propellerads, etc. and running the offer on those (one at a time! unless you super experienced), and cutting placements just as you did with your ZP setup.
Either way congrats on a successful campaign! Good luck on your scaling 
Well - you can scale with other networks, like Jaybot just noticed. You can buy on similar targeting or ask manager about some white\black lists to start with.
If you wanna run with Clickadu - hit our BD, George (Skype - george_14346).
I also like to scale to other sources more than trying to get all the traffic there is available on a single source.
There are a few advantages to this :
- the volume on a single source is always limited, the more of it you get, the more you will be exposed to competition that can rip your campaigns.
- more volume from a single source means faster saturation and an increased frequency of your ads being shown to the same audience.
More sources equal to more publishers, bigger reach, more traffic categories ... so you can even find some great performing targets this way.
Scale to other sources, it might not work everywhere, but there is high chance that it will if their traffic is good quality.
Lookup this advertiser on the network and see if they operate in other geos.
Try to scale their offer into multiple geos on ZP, then also scale to other sources.
I think the best possible outcome here is to branch out to more traffic sources. You got a winner, start with one of the big traffic sources for pop and use the same landers. Zeropark are awesome, but if you hit a hurdle you feel you can't pass with the current budgets and targeting with one network, you got plenty of traffic sources you could test. Copy the campaign to more sources and see how you do with starting budget of 50$ daily for like a few days
Good luck mate!