The purposes of guerrilla marketing

As soon as people hear "marketing" they are expecting big corporations trying to sell them stuff they don't need. Well that can be true but not only. Guerrilla marketing can be used for a good cause.

Guerrilla marketing is a way to get people to react at low cost and is used by many organisations.

And if it might not have a direct effect on your daily habits, as long as it gets your attention, it was worth it and is the start of something new.

Examples?

WWF changed the color of a football field during a game with big audience between Brasil and Denmark.
The message was: every 4 minutes the equivalent of a football field disapears in brasilian forests. The operation lasted  4 minutes and was a success. It raised the numbers of visits on the website by 73%.

And this is one of the many examples.

Guerrilla marketing was also used to warn about global warming: 

Unicef used it to raise funds to provide africans with clean drinking water:

And Israel cancer association conducted a campaign in Tel Aviv to raise awareness:

So now you know that guerrilla marketing can have a positive impact and serve non lucrative purposes.
Look around you, it can be everywhere!