One aspect of marketing that has been exploded by the internet (social media specifically) is the "banned commercial" concept. Considered unfit by TV standards due to sexual, racial, etc slants, they have found a niche in video streaming sites. This creates an unintended awareness for the brand via word-of-mouth.
I think companies can astroturf with this, but it's quite risky.
With that out of the way, here is an especially funny one, with this video netting over 1.8 million views. "My mom said I could!" More could come over the next days.