A thread in this section talking about googlebombing suggested the content equivalent: Viral content. A recent viral content winner is not for those easily offended by racy commercials, but can be found here.
The ClickZ article What Makes It Viral? takes on the unfortunate misconceptions. You can't just make content viral the way you "supersize" your drive-through order.
3. Make the content worth sharing. Boring content that's within the corporate-speak comfort zone doesn't go viral. Entertaining, valuable, and problem-solving content has a chance to be shared.
2. Make the content unique. Novel content gets shared, "me too" content does not.
1. Understand human motivation and persuasion techniques. Look at what gets passed around and you'll see the common denominators forget-me-not used.
Like SEO, viral content uses techniques which increase the chance of a hit, but can not guarantee a specific outcome. However, when it works, it creates a lot of low-cost traffic and sales.
SkyHigh Airlines is funny, but depends on a dedicated TV campaign where SkyHigh embodies the broken promise of competitors. With very little work, the whole message can be built into just a web campaign or web/email.
Seems like viral content would spark some interesting discussion here.