> I couldn’t understand why users who were making a thousand dollars in ad revenue each month, didn’t upgrade their accounts, after all it only costs $25. Turns out, a lot of these users were living in countries where they couldn’t have a Visa card or PayPal account, and just couldn’t pay me even if they wanted to.

I was highly interested when the author said he moved to Morocco to lower living costs. I was hoping he would have insights in how to overcome problems like this. I find it fascinating that these users are somehow receiving money online, but can't pay for things online.