A community member signs up for the ad-free mobile network, then TPO will send 10% of the monthly bill to any cause that the member chooses. Here is @jimmy_wales' letter regarding TPO's mission. https://tpo.com/about.

Hey all. I've been privileged to be a part of the team working on this, it's pretty late over here in the UK but if you've got any questions then Jimmy might be about to answer, if not then I'll do my best.