We are back! With not one, but TWO contests! Enter your presentations and compete with the best presenters the world over. Choose whatever topic interests you- teaching 5th graders history, why you think your city rocks or convince us to buy hybrid cars. Evangelize Linux or share a recipe for that perfect apple pie! Tons of prizes to be won. Entries could be presentations or videos. Any SlideShare user can vote. Our awesome judges select the final winners from each category.