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Library/Campaign/Why So Serious? (The Dark Knight ARG)/Certificate

Spread Certificate · No. HIS-01441

Joker-defaced Uncle Sam 'I Want You' poster from the Why So Serious? campaign

This certifies how far it spread

Why So Serious? (The Dark Knight ARG)

Warner Bros. (studio); 42 Entertainment (agency) ·May 2007 ·seeded onOpen webthenPressRetailTVYouTubeBox office

Spread Score

32

Niche

Verified independently

Verified

3 outlets

National press, from Los Angeles Times and WIRED

Verified

Jul 10 ’08

Milestone date, May 2007 to Jul 10 ’08

Verified

6 platforms

Started on Open web

Claimed, not audited

Claimed

11M

Agency claim: cumulative unique participants, not active players

Per 42 Entertainment

Claimed

650K

Agency claim: Comic-Con online participants, not the street crowd

Per IGN

Claimed

97K

Agency recollection: emails needed to unlock the Joker photo

Per IGN

Issued Oct 23, 2026 · Spread Score v1.3 provisional · 17 sources

howitspread.com/id/HIS-01441

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