One of the major benefits that many employers offer to their workers is the ability to buy company stock with some sort of tax advantage or built-in discount.

FORBES: Introduction To Incentive Stock Options

In Georgia, for example, a huge discount store was recently built just a short distance from a smaller store, which was abandoned.

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This discount is justified by all the restrictions built into the partnership (by the donor, of course).

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Andrew Dodwell, who is trying to stop commercial wind farms being built in Devon, said Good Energy's discount incentive "sounded like bribery" and the prospect of cheaper electricity would not persuade him to stop campaigning against wind farms.

BBC: Delabole wind farm households offered discount tariff