As I've discussed before, viral video can be an incredibly cheap form of online advertising. The Viral Factory, a US/UK-based firm, has developed a strong track record for actually delivering viral campaigns to their clients on demand.
Check out out a few of their hits:
--Remington - 2.4 million views in 3 weeks
--Trojan Condoms - 35 million views and counting
--Lynx Click! - Almost 10 million views
That's pretty impressive. I'd love to know what the CPM of these various campaigns were but I'm willing to bet that they're price competitive.
If you're bored, you can also check out the list of the top 10 viral videos of all time that they recently compiled. The number one video has supposedly been viewed 900(!) million times:
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