Since we began this list five years, it has become the gold standard for genealogy lists. Part of the reason is the care and attention we put into the process to create an independent, objective list. We start by compiling an extensive list of genealogy websites from around the world. We then used the services of Alexa (the internet traffic people) to help us rank actual internet traffic to each website.
Internet traffic can be a tricky thing to measure. It is more than just the number of visitors to a website. Other important considerations include the amount of content consumed by a typical visitor to the website and the amount of time spent at the website. Thus, our rankings are based on a combination of three factors: visitors, content and time. The result is an objective and independent ranking of the top 100 genealogy websites.