Google PPC Ad Client IDs Widely Used in Typosquatting
Tyler Moore & Benjamin Edelman - Web Appendix to Measuring the Perpetrators and Funders of Typosquatting

Google's ad click links provide an indication of which Google partner will be paid for clicks on a given typo domain. On this page, we tabulate Google's ad partner "client ID" values to identify the Google partners who support the most typo domains

Analysis considers only typos of the most popular 3,264 .COM sites. Because other sites are also targeted by typosquatting, the reported typo counts are a lower bound on the true amount of typosquatting.

We found the listed typosquatting domains using the search process detailed in Measuring the Perpetrators and Funders of Typosquatting. We built automated systems to classify the revenue sources of each typosquatting domain, as detailed in section 3, while section 4.1 and figure 4 analyze the prevalence of specific Google partners. All data was collected in July 2009.