I know, i should choose 1 geo & 1 vertical and stick to them at least for a month.
Among mobile marketing experience, i worked most with pop traffic like ZP, PopAds (spent ~ $1k).
Thats why i am looking vertical&geo for such type of traffic. Now i choosed US sweeps soi, with payout 1-2$, they are in top mundomedia.
I know that US traffic is very expensive. So i am not sure, should i choose this geo/vertical or some CPIs in IN&SG (like Zeno choosed for 6WAM), where payouts and traffic price are even more cheap.
P.S. Looking for mastermind for pop traffic, my skype: cpa.oleg