We like the use more colors, maybe we can try other combination, with brighter colours, like, orange, yellow, even blue.. We're free to help us!!
Other thing that we could experiment is sutil icons as $, the signal of mobile, or conection, or "collect money" We didn't find the time with the icons in any logo that people created, but we'll get there!!
Mobo is a website that users will download credits in "reais" (brazilian coin, like dollars) to go shopping in real stores and places, just to remind you.