But how long do we remember today's viral hits? Test yourself: Here's a Times Online listing of the top 10 viral campaigns from mid-2007, which includes Nike's ad for football boots, featuring Ronaldinho.
And here's Campaign's listing of top 10 viral ads of 2008. Do you remember the Pot Noodle "Tipping Pot" ad (pictured above)? Did it change your mind about the brand, encourage you to try it for the first time, remind you how much you like (or don't like the brand) or motivate you to make a repeat purchase? The real test of viral advertising's power is its ability to influence how we think, feel or act toward a brand or product.