Every time the donation bar for wikipedia comes up, I think about making a project like this to reduce their bandwidth and server costs. I have no idea if some

Every time the donation bar for wikipedia comes up, I think about making a project like this to reduce their bandwidth and server costs. I have no idea if something ad-hoc would work for their workload (they may have way too long of tail). On the other hand, I think a lot of people would be willing to permanently donate some upload bandwidth and processing power to wikipedia if it were feasible to take advantage of it.