This Ad Stinks: Let Readers Vote
For Billy Bloom, advertising with StumbleUpon was a bit like stepping into the Coliseum in ancient Rome: If StumbleUpon users liked Zunafish.com—Bloom's site for trading CDs, DVDs, video games, and books—they could endorse it by clicking a "thumbs up" icon. A few thousand of those might make Zunafish.com a hit as word spread among StumbleUpon users and, perhaps, their friends.
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