A member of the Topics team recently attended the Cause Marketing Forum in Chicago, Illinois. One of his favorite presentations introduced him to the Nike ChalkBot. Combining social media, a giant printer and personal messages, the ChalkBot decorated the streets of the 2009 Tour de France with messages of hope and encouragement. Contributors could enter their messages via tweet, text message, or by visiting WearYellow.com. The video below shows how the ChalkBot works. We're excited Nike is using it again during the 2010 TdF!