Guerrilla Marketing Campaigns take consumers by surprise, make a strong statement and are memorable. They are also extremely fun, have a high return on investment and represent brands in an exceptionally positive light. Grassroots has been in the guerrilla marketing business for over 35 years, so we’ve rolled out numerous outstanding and timeless campaigns. Here are the top best guerrilla marketing campaigns we have launched. United Way Guerrilla Marketing Campaign   Park benches with branded mats were placed throughout Toronto to raise awareness about local poverty and how several people must use benches as beds.   TIFF/ET Canada Guerrilla Marketing…