Now that SeoMoz’s Randfish finally posted what I have been saying for 3 years now, the secret is out of the box. Rank asked his friends on social networks to search for a term and click on his girlfriend’s website.
He got top position, Google found out about it and nulled his efforts. His conclusion: zero.
I can tell you I have had great results in the past using this. As I said in my post from 2008, I usually use Amazon’s mechanical turk to do this.
Using proxies, they search and click on my terms. I log every traffic referred by Google and them have a script to compare the IPs with the logs they send.
Is is important they start on Google’s page 1 that’s why I’ve convinced them there’s a parameter on the Google query url that shows how many page they have visited before the click.
One last thing: you need to refresh our campaigns from time to time, or else you will serp drop.