[logicalman]

For point 2, there is a white paper on using cryptocurrency to incentivize the development of Tor networks - http://www.nrl.navy.mil/itd/chacs/ghosh-torpath-torcoin-proo...

[kristofferR]

OnionTip.com is a simpler way of incentivizing people to run Tor nodes by using Bitcoin.

It may be too simple though, since the amount donated in laughably low compared to the work done by the nodes.

Torcoin and similar solutions may be a better solution due to that issue.