The answer is a "carrotmob".
Imagine going around to the shopkeepers in your neighbourhood and asking them what percentage of their sales they would be willing to invest in improving their energy efficiency. Identify the highest bidder and, using social media, you mobilise the local community to "mob" their shop on a mutually agreed date. Document everything on YouTube and get others to repeat the experiment around the world.
Corporate social responsibility and activism, the development 2.0 way. (Via the Guardian)
P.S. As well as being the opposite of a boycott, carrotmobs might also be an antidote to "slacktivism".
Update: Check out the video below for an example of just how a carrotmob works in practice.
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