It's a page grouping tool. My stupid pun-based naming scheme is thus:
Page group -> Jimmy Page group -> Led Zeppelin -> Zepper
Call it with a website name. It will scrape/index/spider the website and group similar-looking pages together.
If possible it will try to name the group.
Nothing terribly fancy, but it just deals with the string similarity between each page's tag list and decides if the page structure is similar enough to another one.
Feedback loop for machine learning.