What do we get from a series of Old Spice youtube commercials?

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when we see a commercial like this, what do we do? we might go to google and search who "Isaiah Mustafa" is; or we might go on youtube and get more similar Old Spice commercials by Isaiah Mustafa, and then send them around to friends. Do we want to share how loyal we are with this brand? no we share them simply because they are funny!
- a very successful example of online world of mouth.