We all know that rock bands pile into vans to go on tour -- well, why not creative agency types? So goes the rationale behind Plaid Nation 2009, a "rolling celebration of creativity and a demonstration of social media in action" founded by the principals at Plaid, an agency based in Danbury, CT. The Plaids kicked off their tour in Detroit on July 20, and yesterday stopped in Chicago to visit the headquarters of t-shirt juggernaut Threadless in the morning, and Wicker Park's The Boring Store in the afternoon. They came, they saw, they tweeted/photographed/filmed/swag-distributed. And then they headed east toward Indianapolis. more ›