Viral marketing aims to spread content rapidly through social media shares, resembling a supercharged version of word-of-mouth. The key is creating content that people want to share. Emotional Marketing stirs strong emotions, while Buzz Marketing builds hype around products or events. Incentivized Marketing offers rewards for sharing, as Dropbox did with its referral incentives. Lucky Marketing is when content unexpectedly goes viral, like the "Dressgate" debate. Though viral marketing is a cost-effective way to boost engagement and awareness, it can be unpredictable, carries the risk of negative reactions, and often fades quickly.