99 Ways YouTube Has Redefined 'Viral'

YouTube has successfully established itself as the go-to place for user-submitted viral video content. It's a place where 14-year-old boys, 93-year-old grandmas and the Pope all have the same opportunity to capture coveted video plays and viral traffic.

The YouTube innovations you'll see below are every bit as diverse as the videos on YouTube itself. There are viral videos, of course, from poor Miss South Carolina to Judson Laipply's "Evolution of Dance" performances. There are also YouTube celebrities, from a baby balladeer to the eponymous chef of "Depression Cooking with Clara."

Click through the giant cluster below to relive the best moments in YouTube viral history.