Hub Finder looks for sites which have co occuring links to related authoritative websites on a particular topic.
You can manually enter sites you want to cross check, or grab the top ranked results from Yahoo! Search or Google.
The depth limit acts as a noise filter since Yahoo! places some of the better backlinks near the top of their results.
Hub pages which link to related resources may provide powerful links which are given a relevancy boost in community, topic, or authority based search algorithms
403 errors means the API queries are used up for the day.
