This tool is useful for analyzing website traffic and identifying popular websites. It can also be used for SEO purposes, as it helps to identify popular backlinks and potential link-building opportunities.
The domain name extraction process involves parsing the input URLs and extracting the domain name part, which is the part of the URL that identifies the website. The tool then creates a dictionary object to store the domain name counts and iterates over the list of domain names to count their occurrences. The final result is a sorted list of domain names and their respective counts.