Everyone has heard about BitCoin by now, but did you know that crypto-currencies are just a subset of Distributed Autonomous Corporations?
Distributed Autonomous Corporations (DAC) run without any human involvement under the control of an incorruptible set of business rules. (That's why they must be distributed and autonomous.) These rules are implemented as publicly auditable open source software distributed across the computers of their stakeholders. You become a stakeholder by buying "stock" in the company or being paid in that stock to provide services for the company. This stock may entitle you to a share of its "profits", participation in its growth, and/or a say in how it is run.