Viral Marketing: Why so serious?

In May 2007, 42 Entertainment began a viral marketing campaign utilizing the film's "Why So Serious?" tag line with the launch of a website featuring the fictional political campaign of Harvey Dent, with the caption, "I Believe in Harvey Dent." The site aimed to interest fans by having them try to earn what they wanted to see and, on behalf of Warner Bros., 42 Entertainment also established a "vandalized" version of I Believe in Harvey Dent, called "I believe in Harvey Dent too," where e-mails sent by fans slowly removed pixels, revealing the first official image of the Joker; it was ultimately replaced with many "Haha"s and a hidden message that said "see you in December."


After the death of Heath Ledger, on January 22, 2008, Warner Bros. adjusted its promotional focus on the Joker, revising some of its websites dedicated to promoting the film and posting a memorial tribute to Ledger on the film's official website and overlaying a black memorial ribbon on the photo collage in WhySoSerious.com.