In some form or other, guerilla marketing has been with us for a long time. Theater posters plastered on construction barriers... companies paying people to have logos tattooed on their bodies... messages scrolling on the Good Year blimp... all are powerful examples of how it can work well.
Guerilla marketing is defined as "an unconventional system of promotions on a very low budget ... relying on time, energy and imagination instead of big marketing budgets." And these low-key, grassroots ideas are often some of the most effective marketing tools around.
Every day, we're surrounded by these subtle, "here I am" promotions: