Category: Marketing, viral
Learning Viral: The Leech Method
One of the best and most successful methods of implement viral is what I call the leech method. This is what has made some of the largest and most successful companies ever. How does it work? Great question.
Leech Method: This is creating a viral system on the back of a system that has a crap load of people.

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Examples:
- Paypal auto-inserts into eBay.
- Facebook apps on the back of Facebook
- Google being used to power Yahoo & AOL (Not really viral but leech method)
- YouTube creating video flash embeds on MySpace
- Slide creating instant bulletin posts on MySpace as well.
Currently, many sites encourage people to email their friends and with fingers-crossed those users may come to their site. The leech method goes to the most popular party in the city and starts infecting people there.
What are other sites still available to leech on?
Update: If you are interested in gaming you should check out Charles Hudson’s Social Gaming Summit. He even gave Okdork Readers 15% off.
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Noah Kagan wrote Learning Viral: The Leech Method on May 7th, 2008 and there are 
7 Responses to “Learning Viral: The Leech Method”
May 7th, 2008
8:02 pm
Hey Noah,
Great seeing you at Plug and Play today! Mixbook is very much into the “leech” method for user acquisition - although I don’t know if I want to be known as a leech.
Andrew
May 8th, 2008
5:22 am
A lot of people are paying attention to Twitter these day.
MrAchievement
Stanley Bronstein
Attorney, CPA, Author, Blogger & Professional Motivational Speaker
May 8th, 2008
7:17 am
My only real reason for wanting to comment was a sort of OCD twitch I got. Call it attention to detail I don’t know. This was written by Noah on the 7th of May, and there are 1 comment. I’m a grammarian.
Hopefully now there is 2 comments.
May 8th, 2008
9:54 am
Craigslist has a lot of traffic that perhaps could be used to create an add-on social network on top.
May 8th, 2008
12:34 pm
Every site out there via widgets
Seriously - the whole widget fad is just this - leeching the long tail.
May 13th, 2008
12:02 am
I think Viral marketing is so fascinating that i really like reading all your posts about it. Thanks.
May 15th, 2008
6:53 pm
“Google being used to power Yahoo & AOL (Not really viral but leech method)”
Also one of the biggest blunders ever made by Yahoo;-)
That being said, viral products also have to have mass appeal to everyone. PayPal worked well with eBay because it solved a problem in their marketplace (immediate payments) that wasn’t addressed by their other solution (Billpoint).
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