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1.
An idea, concept, product, video or other cultural meme exponentially increases in popularity, meaning its popularity doubles every minute, hour, day, month or other unit of time.

On youtube increasing popularity can be tracked by clicking the video statistics icon to the right of the number of times viewed.
The 'Miracle - Matisyahu Hanukkah' video is now going viral. It's a viral video. It's popularity is doubling everyday (as of 12/03/2010, eventually it will plateau).
by Meme-ologist December 03, 2010