Saw a similar story here: Sucuri Security: SEO SPAM network - Details of the wp-includes infection
Search google for any type of prescription drug (ex. "buy propecia"). Interestingly enough 10-20% of the results are 13-year old PR5+ edu sites. They haven't completely defaced the site either, they only redirect traffic coming from google with a drug's brand name in the referral query.
Not surprisingly all of these sites have Russian registrars or nameservers.
The cumulative search volume for these terms is into the tens of millions. Estimating customer value based on PPC costs for these terms and assuming they are just shipping dyed sugar pills would easily put their net into high 7 figures per month.
It seems they have been banking on this method for at least a year now as well.
Search google for any type of prescription drug (ex. "buy propecia"). Interestingly enough 10-20% of the results are 13-year old PR5+ edu sites. They haven't completely defaced the site either, they only redirect traffic coming from google with a drug's brand name in the referral query.
Not surprisingly all of these sites have Russian registrars or nameservers.
The cumulative search volume for these terms is into the tens of millions. Estimating customer value based on PPC costs for these terms and assuming they are just shipping dyed sugar pills would easily put their net into high 7 figures per month.
It seems they have been banking on this method for at least a year now as well.