Similar Functionality Using Views?

Hi,

I like the way this module sorts the content by the relevancy (the content having the most number of similar terms at the top).

I happened to stumble upon an article about using Views to show related content by using arguments. It works fine. But they didn't sort by most relevancy. Could any of you suggest a method to achieve this on that view? How does Relevant Content module achieve this? Is it applicable to Views?

Cheers,

Sinan