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At least that's the conclusion we've drawn from the Mashable Global Ads Chart Top 20, a new monthly rundown we've created with Unruly Media. However, if you can't get Gaga or the Biebs, then you have to get creative. Many of these surprising winners show that a well executed idea can spread a message just fine.
Enjoy the first in a new monthly feature from Mashable, this one looking back on May.
Note: The list below does not include music videos, user-generated content or movie trailers. Unruly Media's Viral Video Chart tracks 18 million shares a day through third-party APIs.
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